Aristo was a slide rule manufacturer since 1872. Dennert & Pape was founded by Johann Dennert & Martin Pape, in Hamburg, Germany, and continued under that name until 1936. D&P were the first to laminate and engrave celluloid on boxwood wood slide rules in 1886. Mahogany was used after 1888 and in 1902 started producing slide rules using the System Rietz scales designed by Max Rietz. In 1924 D&P introduced the System Darmstadt slide rule, based on the scales set designed by Prof. Dr. Alwin Walther and began using 'DUPA' as a trademark from 1924 to 1936. All plastic slide rules, using Astrolon for the stock and Plexiglas for the cursor, wereintroduced in 1936 using the trademark 'Aristo'. D&P officially became Aristo as a company in 1948 when they introduced all-plastic Duplex slide rules and discontinued mahogany wood models. Aristo stayed in the slide rule business until the end of 1978, a run of 106 years. Aristo was one of the most important slide rule manufacturers world wide.


REF Dennert And Pape No. 1a 		Dennert And Pape No. 1a - c1880
Made in Germany
Front Scale
A [ B, C ] D


REF Dennert And Pape Chisel Cursor 		Dennert And Pape Chisel Cursor - c1901-1920
Made in Germany
Front Scale
10in // A [ B, C ] D || 27cm
Well: 27-51 cm
Back Scale: [ S, L, T ]
Archive - Tom Dilatush Collection


REF Dennert And Pape Mannheim 		Dennert And Pape Mannheim - c1901-1920
Made in Germany
Front Scale
10in // A [ B, C ] D || 29cm
Well: 29-54 cm. #09 is in the well
Back Scale: [ S, L, T ]
Archive - Tom Dilatush Collection


REF Dennert And Pape Mannheim 		Dennert And Pape Mannheim - c1901-1920
Made in Germany
Front Scale
10in // A [ B, C ] D || 27cm
Well: 27-51 cm. #10 is in the well
Back Scale: [ S, L, T ]
Archive - Tom Dilatush Collection


ISRM Dennert And Pape System Rietz 		Dennert And Pape System Rietz - c1921-1937
Made in Germany
Front Scale
1:25 // F, A [ B, C ] D, E || 27cm
Back Scale: [ S, L, T ]
Notes: #23 is in the well. The glass is from a later Aristo model
Owned by Roman Marian Russek (1933-2011). Donated by his wife, Shiela Russek, Toronto, Canada.
Roman Russek was known for his wide knowledge of power cables and, in later years, for his expertise the transfer of technology within international joint ventures. At the close of WWII Roman was a member of the Polish Army under British command. With Communism descending on his homeland his left to study in Britain where he earned engineering degrees from Heriot Watt University (Edinburgh) and London University. By 1949 he was a Scientific Officer in the Wood Lane Research Laboratories of British Insulated Callenders Cables in London. There he was assigned to teams studying the mechanical behavior of aluminum sheaths, electrical characteristics of oil impregnated paper as well as assisting in the development of flexible joints for submarine cables destined to be used in the HVDC link between North and South Island in New Zealand. As Design Engineer and then Department Manager Roman traveled widely within Canada and internationally representing CWC in many negotiations and discussions with customers and associated firms. He was fluent in five languages. Later as Vice-President Technical Services Roman spent another 14 years transferring technology from the domestic company to the many fledgling associate companies in Mexico, Colombia, Venezuela, Dominican Republic, Ireland, Spain, Brazil. South Africa, Nigeria, New Zealand, Australia and Iran. Roman and his wife Shiela spent much of their retirement years traveling around the world.

An Article about Roman Russek by his friend XAVIER KATAQUAPIT



REF Dennert And Pape No. 28 		Dennert And Pape No. 28 - c1926
Made in Germany
Front Scale
27cm // A [ B, C ] D || 10in
Well: 10-21 inch
Back Scale: 13cm, 5in
Archive - Tom Dilatush Collection


REF Dennert And Pape HR1 Celestial Navigation 		Dennert And Pape HR1 Celestial Navigation- c1940
Made in Germany - Hamburg, Altona
Front Scale
I: 0° - 90° in one direction, 90° - 180° in the other direction
II: 0° - 90° in one direction, 90° - 180° in the other direction
Archive - Tom Dilatush Collection
Notes: This German U-Boat Version type HR1 (Höhenrechenschieber) was a simple dual concentric cylinder ,though a progression from the original Bygrave rule invented in England in the 1920s and designed to solve the PZX triangle. The German Navy required ever greater accuracy for position fixing in special circumstances, one of which was covert opperations, the HR1 was developed to a point where a solution with an error of less than ½ a minute of arc or within about 1 ½ minutes could be calculated. See Position Line Slide Rules by Ronald W.M. van Riet.


REF Dennert & Pape - Aristo 10072
Hazen -Williams Hydraulic Slide Rule 		Dennert & Pape - Aristo 10072 - c1950
Hazen -Williams Hydraulic Slide Rule
Made in Hamburg, Germany - Western Zone
Front Scale
11in // 1 [ 2, 3a, 3b ] 4
Back Scale: [ 5, 6a, 6b ] 28cm
Archive - Tom Dilatush Collection


P066 Aristo Rietz 89 (early) 		Aristo Rietz 89 (early) Date Code 5018 (1950)
Made in Germany
Front Scale
13cm // K, A [ B, CI, C ] D, L
Back - Slider
5inch [ S, ST, T]
Multiple hairlines
Original Owner/Location: Hartmut E. Nieman/Germany


ISRM Aristo Nr. 89 Rietz (1966) 		Aristo Nr. 89 (Rietz) Date Code GFF15 (1966)
Made in Geretsreid, Germany
Front Scale
13cm // K, A [ B, CI, C ] D, L
Back - Slider
5inch [ S, ST, T]
Multiple hairlines
Donated By David Hecht, Alexandria.
Note: The box has "Spare Slide October, 1959" written on it. This is a bit peculiar, because the date code on the slide rule is clearly 1966. It may have been inadvertantly switched by the previous owner(s).


ISRM Aristo Rietz 89 		Aristo Rietz 89 Date Code 3LI9 (1972)
Made in Germany at the Geretsried factory
Front Scale
14cm // K, A [ B, CI, C ] D, L
Back - Slider
[ S, ST, T]
Multiple hairlines
Donated by Marten C. Jensen
Martin is a reliability engineer who used this SR (and others in the ISRM galleries), while working at Motorola Semiconductor in Phoenix, AZ.


S099 Aristo 99 		Aristo 99 - Date Code G5310 (1953)
Made in Germany at Geretsried plant
Front Scale
11inch // K, A [ B, CI, C ] D, L
Back - Slider
28cm [ S, ST, T]
Multiple hairlines: HP
Original Owner/Location: Unk/Canada


REF Aristo 99 		Aristo 99 - Date Code GFF11 (1966)
Made in Germany at Geretsried plant
Front Scale
28cm // K, A [ B, CI, C ] D, L
Back - Slider
[ S, ST, T]
Note: transparent body
Multiple hairlines: HP
Donated by David Hecht


REF Aristo 203 Projector Slide Rule 		Aristo 203 Projector Slide Rule (in Lietz Prado Projector)
Made in Germany by Aristo-Werke
Front Scale
L, K, A [ B, CI, C ] D, S, ST, T
Note: transparent body
Multiple hairlines: HP


REF Aristo 602 (1972)		 Aristo 602 (1972)
Made in Germany
Front Scale
A ( B, -50%/+100%(Mark-Up) )
Back: TBD
Archive - Wenzel Collection


REF Aristo 622 (1970)		 Aristo 622 (1970)
Made in Germany
Front Scale
K, D, A,( B, CI )
Back: TBD
Archive - Wenzel Collection


REF Aristo Commerz 623		 Aristo Commerz 623
Made in Germany
Front Scale
English-Metric Conversions, A( B, CI, -50%/+100%(Mark-Up) )
Back: TBD
Archive - Wenzel Collection


ISRM Aristo 801 Rietz (Charvos-Roos) 		Aristo 801 Rietz - No Date Code
Made in Germany for U.S. Company Charvos-Roos
Front Scale
K, A [ B, CI, C ] D, L
Back: Blank
Multiple hairlines: Kw, PS
Donated By david Hecht, Alexandria.
Retail box marked with price of $2.95


P196 Aristo 803 Scholar 		Aristo 803 Scholar - Date Code GFF3
Made in Germany
Front Scale
L, K, A [ B, CI, C ] D, S, ST, L
Back: Blank
Multiple hairlines: Kw, PS
Original Location: Peru, South America


P205 Aristo 812 Simplex 		Aristo 812 Simplex - Date Code G6024
Made in Germany
Front Scale
5in // A [ B, C ] D
Back Scale: [ S, L, T ]


P233 Aristo 814 Elektro 		Aristo 814 Elektro - Date Code 515 - c1955
Made in Hamburg, Germany by Dennert & Pape
Front Scale (extended)
13cm // LL2, A (Kw) [ B (Hp), CI, C] D, LL3
Front Well: V, D/M = G/M (3~)
Back Scale: 5in [ Sin, Lg, Tg ]
Multi-lined Cursor
Additional Cursor hairline on slide
Gauge points for resistance of metal wire


P160 Aristo 829 Multi-Rietz 		Aristo 829 Multi-Rietz
Made in Germany - Charvoz
Front Scale
13cm, P, A [ B, T, ST, S ] D, DI, 5in
Back Scale:
K, DF [ CF, CIF, CI, C] D, L
Multiple hairlines
Adv: Charvoz
Original Owner/Location: Unk/Netherlands


P158 Aristo 845 Commerz 		Aristo 845 Commerz
Made in Germany
Front Scale
13cm // KZ [ T2, P, T1 ] Z, M, Conversion Gauge Marks
Back Slider: [ £, s./d.]
Original Owner/Location: Unk/Netherlands


ISRM Aristo 867U Darmstadt 		Aristo 867U Darmstadt - dc 61 23 (1961)
Made in Germany in Hamburg or Geretsried - Note transparent linear scales
Front Scale
15cm // K, A [ B, BI, CI, C ] D, P, S, T \\ 6in
Back Slider: [ L, LL1, LL2, LL3]
Multiple hairlines
Back Adv: ASEA (Allmänna Svenska Elektriska Aktiebolaget) - A Swedish company that built 9 nuclear plants in Sweden in 1960's
Donated by Russell Fox, Anchorage, Alaska.
This slide rule was used by his father who purchased it in Germany 1961-1964. He worked as an Electrical Engineer with BPA in Portland, Oregon. BPA and ASEA had a joint venture in providing electrical energy.


ISRM Aristo 867U Darmstadt 		Aristo 867U Darmstadt - dc HF023 (1965)
Made in Hamburg, Germany - Note transparent linear scales
Front Scale
15cm // K, A [ B, BI, CI, C ] D, P, S, T \\ 6in
Back Slider: [ L, LL1, LL2, LL3]
Multiple hairlines
Donated by David Hecht, Alexandria, VA


ISRM Aristo 867U Darmstadt 		Aristo 867U Darmstadt - dc 2LA06 (1970)
Made in Hamburg, Germany - Note transparent linear scales
Front Scale
15cm // K, A [ B, BI, CI, C ] D, P, S, T \\ 6in
Back Slider: [ L, LL1, LL2, LL3]
Multiple hairlines
Belonged to Roman Russek. Donated by Shiela Russek, Toronto, Canada


P069 Aristo 868 Studio (Variation 1) 		Aristo 868 Studio (Variation 1)
Made in Germany - NIB German Manual
Front Scale
LL01, LL02, LL03, A [ B, L, K, C ] D, LL3, LL2, LL1
Back Scale
T, ST, DF [ CF, CIF, CI, C ] D, P, S
Multiple hairlines: PS, KW


ISRM Aristo 868 Studio 		Aristo 868 Studio - date code 622 (1962)
Made in Germany - Metal Cursor bars
Front Scale
LL01, LL02, LL03, A [ B, L, K, C ] D, LL3, LL2, LL1
Back Scale
ST, T Cot DF [ CF, CIF, CI, C ] D, P, S Cos
Multiple hairlines: PS, KW
Donated by David Hecht, Alexandria, VA


ISRM Aristo 868 Studio 		Aristo 868 Studio - date code 2LST5 (1973)
Made in Germany - Plastic Cursor Bars
Front Scale
LL01, LL02, LL03, A [ B, L, K, C ] D, LL3, LL2, LL1
Back Scale
ST, T Cot DF [ CF, CIF, CI, C ] D, P, S Cos
Multiple hairlines: PS, KW
NIB


ISRM Aristo 870 Multilog (Charvoz) 		Aristo 870 Multilog - date code 592 (1959)
Made in Germany for US Brand Charvoz - Metal Cursor Bars
Front Scale
LL00, K, A [ B, T Cot, ST, S Cos, C ] D, DI, LL0
Back Scale
LL01, LL02, LL03, DF [ CF, CIF, L, CI, C ] D, LL3, LL2, LL1
Multiple hairlines: HP, KW
Donated by David Hecht, Alexandria, VA


ISRM Aristo 870 Multilog 		Aristo 870 Multilog - date code 2FL09 (1967)
Made in Germany - Plastic Cursor Bars
Front Scale
LL00, K, A [ B, T, ST, S, C ] D, DI, LL0
Back Scale
LL01, LL02, LL03, DF [ CF, CIF, L, CI, C ] D, LL3, LL2, LL1
Multiple hairlines: HP, KW
NIB


ISRM Aristo 0901 Junior (1967) 		Aristo 0901 Junior Simplex - dc 1S67
Made in Germany - Note Logo Stamped in Braces
Front Scale
DF [ CF, CIF, CI, C ] D, A, K
Back - Blank
Multiple hairlines: v, d, q
Original Owner/Location: Unk/Germany


ISRM Aristo 0903 Scholar 		Aristo 0903 Scholar
Made in Germany - Note different scales - date code 3FX5 (1969)
Front Scale
L, K, A [ B, CI, C ] D, S Cos, ST ST, T Cot
Back Scales:
25cm [ ] 8-0,0-8 in
Multiple hairlines
Donated by David Hecht, Alexandria, VA


ISRM Aristo 0903 Scholar 		Aristo 0903 Scholar
Made in Germany - date code WLA06 (1970) Note: Aristo and Model number in red
Front Scale
L, K, A [ B, CI, C ] D, S Cos, ST ST, T Cot
Back Scales:
25cm [ ] 8-0,0-8 in
Multiple hairlines
Donated by David Hecht, Alexandria, VA


ISRM Aristo 0903 Scholar 		Aristo 0903 Scholar
Made in Germany - Note different scales - date code 3LT41 (1974)
Front Scale
L, K, A [ B, BI, CI, C ] D, S Cos, ST ST, T Cot
Back: Blank
Multiple hairlines
Donated by David Hecht, Alexandria, VA


ISRM CREI Aristo 0903LL Scholar (Charvoz)
Capitol Radio Engineering Institute 		CREI Aristo 0903LL Scholar (Charvoz)
Capitol Radio Engineering Institute
Made in Germany - date code G6011 (1960)
Front Scale
L, K, A [ B, CI, C ] D, S Cos, ST ST, T Cot
Back - Slider
25cm [ S, LL2, LL3] 10in
Multiple hairlines
Donated by David Hecht, Alexandria, VA


S102 Aristo 903LL Scholar (early) 		Aristo 903LL Scholar (early) Simplex
Made in Germany - Note different scales
Front Scale
25cm, K, A [ B, CI, C ] D, S, T, L
Back - Slider
[ S, LL2, LL3]
Multiple hairlines


ISRM Aristo 903LL Scholar 		Aristo 903LL Scholar
Made in Germany - Note Logo Stamped in Braces
Front Scale
L, K, A [ B, CI, C ] D, S, ST, L
Back Slider
25cm [ S, LL2, LL3] 8 inch(bi-directional)
Multiple hairlines
Original Owner/Location: Petra Schlvmev


S202 Aristo 903LL Scholar 		Aristo 903LL Scholar
Made in Germany - Note different scales/end pieces
Front Scale
L, K, A [ B, CI, C ] D, S, ST, T
Back - Slider
25cm [ S, LL2, LL3] 10 inch
Multiple hairlines: Ps, Kw
Original Owner/Location: Unk/Germany


ISRM Aristo 0903 VS-2 Scholar 		Aristo 0903 VS-2 Scholar
Made in Germany - date code 3FE49 (1968)
Front Scale
L, K, A [ B, CI, C ] D, S Cos, ST ST, T Cot
Back - Slider
25cm DF [ CF, C ] D, 10in
Multiple hairlines
Donated by David Hecht, Alexandria, VA


ISRM Aristo 0903 VS-2 Scholar 		Aristo 0903 VS-2 Scholar
Made in Germany - date code 3LS15 (1973)
Front Scale
L, K, A [ B, CI, C ] D, S Cos, ST ST, T Cot
Back - Slider
DF [ CF, C ] D
Multiple hairlines
Donated by David Hecht, Alexandria, VA


S546 Aristo 0905 Shut-Commerz (Commerce) 		Aristo 0905 Shut-Commerz (Commerce)
Made in Germany - for Charvoz 1961
Front Scale
-%/+%, KZ [ T2, P, T1 ] Z, M, £, s/d
Back Scale: 25cm [ Blank] 8-0in, 0-8in


ISRM Aristo 0905 Shut-Commerz (Commerce) 		Aristo 0905 Shut-Commerz (Commerce)
Made in Germany - date code 3FE74 (1968)
Front Scale
-%/+%, KZ [ T2, P, T1 ] Z, M, £, s/d
Back Scale: 25cm [ Blank] 8-0in, 0-8in
Donated by David Hecht, Alexandria, VA


ISRM Aristo 0906 Bi-Scholar 		Aristo 0906 Bi-Scholar
Made in Germany - date code 3LA91 (1970)
Front Scale
K, A [ B, BI, S, C ] D, L, P
Back Scale
ST ST, T1 Cot1, T2 Cot2, DF [ CF, CIF, CI, C] D, DI, S Cos
Multiple hairlines
Donated by David Hecht, Alexandria, VA


S055 Aristo 0906LL Scholar LL 		Aristo 0906LL BiScholar LL Duplex
Made in Germany
Front Scale
L, K, A [ B, BI, S, C ] D, LL3, LL2, LL1
Back Scale
ST ST, T1 Cot1, T2 Cot2, DF [ CF, CIF, CI, C] D, P, S Cos
Multiple hairlines
Original Owner/Location: Unk/Germany
 

Looking for: Aristo 907


ISRM Aristo 0908 TriLog 		Aristo 0908 TriLog
Made in Germany
Front Scale
T1 Cot1, T2 Cot2, A [ B, BI, CI, C ] D, P, S Cos, ST ST
Back Scale
LL1, LL2, LL3, DF [ CF, CIF, CI, C ] D, L, K
Multiple hairlines: PS, KW
Original Owner: Wember in Germany
Donated by David Hecht, Alexandria, VA


S252 Aristo 0908 TriLog 		Aristo 0908 TriLog
Made in Germany
Front Scale
T1. T2, A [ B, BI, CI, C ] D, P, S , ST
Back Scale
LL1, LL2, LL3, DF [ CF, CIF, CI, C ] D, L, K
Multiple hairlines: PS, KW
Original Owner/Location: Wember/Germany


S351 Aristo 909 MultiTrig (Charvoz) 		Aristo 909 MultiTrig (Charvoz)
Made in Germany
Front Scale
P, A [ B, T, ST, S ] D, DI
Back Scale
K, DF [ CF, CIF, CI, C ] D, L
Multiple hairlines: W, HP
Original Owner/Location: Unk/USA


ISRM Aristo 915E Elektro

ISRM Aristo 915E Elektro Insert 		Aristo 915E Elektro - dc 2LA02 (1970)
Made in Germany - Note transparent linear scales
Front Scale: extended
28cm // K, A [ B, BI, CI, C ] D, LL3, LL2 \\ 9-0in,0-9in
Back Scale: [ S, ST, L, T]
Multiple hairlines
Donated by David Hecht, Alexandria, VA


S018 Aristo 0929 		Aristo 0929 MultiRietz
Made in Germany
Front Scale
P, A [ B, T, ST, S, C ] D, D1
Back Scale
K, DF [ CF, CIF, CI, C ] D, L
Multiple hairlines: PS
Original Owner/Location: Wember/Germany


REF Aristo 0958 Geodat 400g 		Aristo 0958 Geodat 400g c1956
Made in Germany - 24 scales
Front Scale
ctg, T, arc, DF [CF, CIF, CI, C] D, P, S, cos
Back Scale
1-cos, 1-cos, A [ B, 1/tan (a/2), sin cos, cos2 ] D, L, K
Multiple hairlines: PS, KW
Archive -Not in Collection


ISRM Aristo 965 Shut-Commerz II (Commerce)

ISRM Aristo 965 Shut-Commerz II Insert 		Aristo 965 Shut-Commerz II (Commerce)
Made in Germany - date code G641 (1964)
Front Scale
28cm // -%/+%, KZ [ T2, P2, P1, T1 ] Z, M, £, s/d
Back Scale:[ ZZ3, ZZ2, ZZ1, ZZ%m T1]
Donated by David Hecht, Alexandria, VA


ISRM Aristo 967U Darmstadt 		Aristo 967U Darmstadt
Made in Germany - date code 535 (1953)
Front Scale: extended
11inch // K, A [ B, BI, CI, C ] D, P, S Cos, T Cot
Back Scale: [ L, LL1, LL2, LL3]
Multiple hairlines
Donated by David Hecht, Alexandria, VA


S204 Aristo 967U Darmstadt 		Aristo 967U Darmstadt
Made in Germany - date code G612 (1961)
Front Scale: extended
28cm // K, A [ B, BI, CI, C ] D, P, S Cos, T Cot
Back Scale: [ L, LL1, LL2, LL3] 11in
Multiple hairlines
Original Owner/Location: Kristin Bradbury/France


S204 Aristo 967U Darmstadt 		Aristo 967U Darmstadt
Made in Germany - date code 2FX07 (1969)
Front Scale
28cm (clear) // K, A [ B, BI, CI, C ] D, P, S Cos, T Cot \\ 11in
Back Scale: 28cm [ L, LL1, LL2, LL3]
Multiple hairlines
Donated by David Hecht, Alexandria, VA


S103 Aristo 0968 Studio  - V1 		Aristo 0968 Studio  (early)
Made in Germany - note: ends and cursor.
Front Scale; (extended)
LL01, LL02, LL03, A [ B, L, K, C ] D, LL3, LL2, LL1
Back Scale
T Cot, ST ST, DF [ CF, CIF, CI, C ] D, P, S Cos
Multiple hairlines: PS, KW
Original Owner/Location: Wember/Germany


S100 Aristo 0968 Studio - V2 		Aristo 0968 Studio Date Code 64 61 (1964)
Made in Germany
Front Scale; (extended)
LL01, LL02, LL03, A [ B, L, K, C ] D, LL3, LL2, LL1
Back Scale
T Cot, ST ST, DF [ CF, CIF, CI, C ] D, P, S Cos
Multiple hairlines: PS, KW


REF Aristo 0968 Studio - V2B

John Sykes (UK)
Aristo 0968 Studio
Note: Red skid pads on braces
Made in Germany
Front Scale; (extended)
LL01, LL02, LL03, A [ B, L, K, C ] D, LL3, LL2, LL1
Back Scale
T Cot, ST ST, DF [ CF, CIF, CI, C ] D, P, S Cos
Multiple hairlines: PS, KW
Archive - Scan donated by John Sykes (UK)
John used this Aristo slide rule throughout high-school and then at College (Imperial, London).He graduated in 1972 and joined the BBC as a trainee in Designs Department. In 1973 he encountered the HP35 (£200 at that time), which marked the end of his slide-rule days, but he kept his slide rule in safe keeping. John's BBC career was spent mainly in R&D, developing FM, TV and digital transmission equipment He retired from the BBC World Service in 2007 ("Project Director, Digital Radio").


S210 Aristo 0968 Studio - V3 		Aristo 0968 Studio
Made in Germany - Note yellow highlight on slide and scales
Front Scale
LL01, LL02, LL03, A [ B, L, K, C ] D, LL3, LL2, LL1
Back Scale
ST ST, T1, T2, DF [ CF, CIF, CI C ] D, P, S Cos
Multiple hairlines: PS, KW
Original Owner/Location: Unk/Germany


ISRM Aristo 0969 Studiolog 		Aristo 0969 Studiolog
Made in Germany - 29 scales
Front Scale(extended)
LL00, LL01, LL02, LL03, A [ B, BI, K, L, CI, C ] D, LL3, LL2, LL1, LL0
Back Scale
ST ST, T1, T2, DF [ CF, CIF, S, CI, C ] D, DI, P, S Cos
Multiple hairlines: PS, KW


ISRM Aristo 0970 MultiLog Charvoz (early) 		Aristo 0970 MultiLog Charvoz Date Code 593 (March 1959)
Made in Germany - note gold anodized metal ends and metal cursor
Front Scale
LL00, K, A [ B, T, ST, S, C ] D, DI, LL0
Back Scale
LL01, LL02, LL03, DF [ CF, CIF, L, CI, C ] D, LL3, LL2, LL1
Multiple hairlines: HP, KW
Contributed by Shell (Sheldon) Thuet in 2007 (See Webpage). Professional Motorcycle race tuner. The grease on this slide rule has been retained as it was accululated during use by Shell in his shop. See Pickett gallery and MiscUSA (Charvoz-Roos) Gallery for pictures of Shell Thuet. Shell Thuet passed away in Victorville July 8, 2011 at age 98.


S064 Aristo 0970 MultiLog Charvoz (early) 		Aristo 0970 MultiLog Charvoz (early)
Made in Germany - note silver anodized metal ends and metal cursor
Front Scale
LL00, K, A [ B, T, ST, S, C ] D, DI, LL0
Back Scale
LL01, LL02, LL03, DF [ CF, CIF, L, CI, C ] D, LL3, LL2, LL1
Multiple hairlines: HP, KW
Original Owner/Location: CCJ/USA


S065 Aristo 0970 (Modern) 		Aristo 0970 MultiLog Charvoz (Modern)
Made in Germany - note plastic ends and plastic cursor
Front Scale
LL00, K, A [ B, T, ST, S, C ] D, DI, LL0
Back Scale
LL01, LL02, LL03, DF [ CF, CIF, L, CI, C ] D, LL3, LL2, LL1
Multiple hairlines: HP, KW


S106 Aristo 0971 Hyperbolog 		Aristo 0971 Hyperbolog 
Made in Germany - note plastic ends and plastic cursor
Front Scale
Th, K, A [ B, T, ST, S, C ] D, DI, Sh2, Sh1
Back Scale
LL01, LL02, LL03, DF [ CF, CIF, L, CI, C ] D, LL3, LL2, LL1
Multiple hairlines: PS, KW


REF Aristo 0972 Hyperbolog 		Aristo 0972 Hyperbolog 
Made in Germany - note plastic ends and plastic cursor
Front Scale
H2, Sh2, Th, K, A [ B, T, ST, S, P, C ] D, DI, Ch, Sh1, H1
Back Scale
LL00. LL01, LL02, LL03, DF [ CF, CIF, L, CI, C ] D, LL3, LL2, LL1, LL0
Multiple hairlines: PS, KW
Archive - Scan donated by Franco Maddaleno, Italy


REF Aristo 10096 System Prof.Dr. J. Th. Peters		 Aristo 10096 System Prof.Dr. J. Th. Peters
Made in Germany by Aristo
Front Scale
A (Selected Gauge Marks), A [ B, C ] D, L (compressed 1/2 scale)
Back: Unknown
Scan Provided by Sphere Research


HSRC Aristo 10125 Galvanotechnacher Rechenstab (early)		 Aristo 10125 Galvanotechnacher Rechenstab (early)
Made in Germany for Langbein-Fahnhauser Werke A.G.- calculates magnetic factors of metals
Front Scale
14cm // (Metal Type) a [ b, f, c ] d \\ 5.5in
Back Slide; [ e ]
Back: Instructions and table
Scan Provided by Herman's Slide Rule Catalogue


REF Aristo 10125 Galvanotechnacher Rechenstab		 Aristo 10125 Galvanotechnacher Rechenstab
Made in Germany for Langbein-Fahnhauser Werke A.G. - calculates magnetic factors of metals
Front Scale
14cm // (Metal Type) a [ b, f, c ] d \\ 5.5in
Back Scale
h. m [Óe, Ób ] Fe, 150+Ø, 100+Ø, 75+Ø, 50+Ø, Vert=1/5 Fe, Q, R
Scan Provided by Sphere Research


REF Aristo 10175 Electronic CIE Logo		 Aristo 10175 Electronic CIE Logo - 1969
Made in Germany - For Cleveland Institute of Electronics
Front Scale
LC, 2p, A [B, CI, C] D, S, T, L
Back Side
Reactance formula, Ohm's law, Reactance and Resonance Problems, etc
Scan Donated by Olivier Cassou, France


REF Aristo 60168 Steel Shape Weight and volume Calculator		 Aristo 60168 Steel Shape Weight and volume Calculator
Made in Germany by Aristo
Front Scale
Area (F (x 100 = mm2), Weight (Kg), Length (mm or M) Back Scale
Base (B), Height (S), Length (L)
Scan Provided by Sphere Research


REF Aristo 80161 Optometrist		 Aristo 80161 Optometrist
Made in Germany by Aristo
Front Scale
German: Sehbereich [ Akkommodieren ] Nahzusatz
English: Visual Field [Accommodation] Near Addition
Scan Provided by Sphere Research

Explanation of Aristo Manufacturing Date Codes

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