HOME


Nordic Slide Rules
from Denmark and Sweden
(Manufacturers not found in their own gallery)


KEEP ISRM FREE!
This gallery is dedicated to Danish and Swedish slide rules and manufacturers of that region.
It is unknown if Finland ever made or rebranded a slide rule for their market.
Manufacturers/Brands Represented: CARID - Denmark, DIWA - Denmark, Norden - Sweden, Teknor - Sweden, UTO - Denmark J.H. Weil - Denmark

Denmark



CARID #3000 Log Log Decitrig Duplex

REF
CARID #3000 Log Log Decitrig Duplex
Made in Denmark - Identical to DIWA No.911
Construction note: Celluloid laminated wood stock. Cursor design and lens retention is similar to early Dietzgen duplexes
Front Scale
L, LL1, DF [ CF, CIF, CI, C ] D, LL3, LL2
Back Scale
LL0, LL00, A [ B, T Cot, ST, S Cos ] D, DI, K
Archive - Steve Seale Collection, Nashville, Tennessee.




Diwa Log Log 101

ISRM 13.10.09.01


wood clamshell case
Diwa Log Log 101 - c1948
Made in Denmark - Wood w/Plastic laminate
Note 1: 'Railroad Track' style divisions engraved on 'DIWANYL' plastic facings.
Note 2: Beautiful wood clamshell box with use care instructions on both sides.
Front Scale
10in // LL2, A [ B, CI, C ] D, LL3 || K
Back Scale (window)
[ S, S&T, T ]
Back: Equivalents
Cursor: 3 hairlines, extended to side (for K scale)
Gift of Phillip Rodley of UpperHutt, New Zealand
This slide rule and others in the ISRM archives and galleries were donated through the generosity and support of Phillip Rodley. Phil is very enthusiatic in finding slide rules in New Zealand that are not available to the rest of the world, and gifting them to ISRM. He enjoys the American brands that have leather sleeves and belt loops.


Diwa No.111 Electro

ISRM 14.01.03.08


Leather sleeve

Also stamped inside flap of sleeve is 'LEES (W) LTD 1943'. Lees (W) ltd. is a company located in Walsall, UK, which made wholesale leather products for firms like Diwa. It is still in business..
Diwa No.111 Electro - 1943-1950
Made in Denmark - Wood w/Plastic laminate screwed to stock.
Front Scale
10-1/4inch // LL2, A (Kw) [ B (mm2)(H.P.), C (Watt) ] D, LL03 || K
Well: Motor TL=%, Volt
Back Scale (window)
[ S, S&T, T ]
Back: Equivalents (English)
Cursor: 3 hairlines on top, one on bottom edge
Original Owner: M.P. Armstrong. Etched on bottom of stock, written in manual and inside flap of sleeve.
Gift Of Phillip Rodley of UpperHutt, New Zealand
 
Instructions (4.29MB PDF)
M.P. Armstrong, most likely an electrical engineer, worked at Reyrolle in 1950 and later, A. Reyrolle & Co. had a New Zealand division, called Reyrolle Pacific.
A. Reyrolle & Co. was a British engineering firm based in Hebburn, Tyne and Wear in the North East of England. The company was founded by Alphonse Constant Reyrolle, a Frenchman, in 1886 at Fitzroy Square in London to produce scientific instruments. He moved the business to Hebburn on Tyneside in 1901. For many years the company was one of the largest employers on Tyneside. The New Zealand division, Reyrolle Pacific, was sold by Siemens AG/VA Tech to a private individual in New Zealand. This included the switchgear factory in Petone, with a staff of about 100. Reyrolle Pacific Switchgear became RPS Switchgear and manufactures retrofit breakers for the original LMT switchgear, and vacuum breakers and panels for 11 kV substations.


Diwa 201 Technical

REF
Diwa 201 Technical - c1955
Made in Denmark - Wood w/Plastic laminate
Front Scale
25cm // K, A [ B, CI, C ] D, L
Back Scale (window)
[ S, S&T, T ]
Back: Equivalents
Cursor: 3 hairlines
Archive Herman van Herwijnen's SR Catalogue


Diwa No.301 Commercial

ISRM 13.07.03.23
Diwa No.301 Commercial
Made in Denmark - Wood with Plastic laminate, rivet and screw reinforcement
Note: Railroad track style divisions
Front Scale: A [ B, CI, C ] D
Back Scale:[ S, S&T, T ]
Back: Equivalents
Cursor: 3 hairlines
Gift of Daniel Swerdlow, Bethesda, Maryland.


Diwa No.301 Rietz

ISRM 14.01.03.02
Diwa No.301 Rietz - date code 36 (March 1956)
Made in Copenhagen, Denmark - made of DIVINYL Plastic laminated wood.
Note: Railroad track style divisions
Front Scale: A [ B, CI, C ] D
Back Scale: [ S, S&T, T ]
Back: Equivalents (English)
Cursor: 3 hairlines
Gift Of Phillip Rodley of Upperhutt, New Zealand
   
English Instructions (10.3MB PDF), Box end,
Use and Care Insert (in Danish/English/German/French/Spanish)


Diwa No.301 Rietz (German version)

ISRM 11.11.18.01
Diwa No.301 Rietz - Date Code 37 (March 1957)
Made in Copenhagen, Denmark - made of DIVINYL Plastic laminated wood.
Front Scale
25cm/10in // K, A [ B, CI, C ] D, L
Back Scale (window)
[ S, S&T, T ]
Back: Equivalents (German)
Cursor: 3 hairlines


Diwa 311 Electro

REF S315
Diwa 311 Electro - Closed simplex
Made in Copenhagen, Denmark - made of DIVINYL Plastic laminated wood.
Front Scale
25cm/10in // Dynamo/Motor, K, A(kW) [ B(hp), CI, C ] D, Volt, tg ctg, cin cos
Back Scale (window)
[LL1, LL2, LL3 ]
Back: Equivalents
Cursor: 4 hairlines


Diwa Rietz-Ideal No. 1

REF S283
Diwa Rietz-Ideal No. 1
Made in Denmark - All Plastic
Front Scale
25cm/10in // L, K, A [ B, CI, C ] D, S, ST, T
Back Scale: Blank
Cursor: 3 hairlines
Original Owner: Hans Christiansen/Rinngade Strauss/Netherlands

601/631 Instruction Sheet
Diwa 601 Rietz
ISRM 09.01.12.90
Diwa 601 Rietz
Made in Denmark - All Plastic
Front Scale
5in // K, A [ B, CI, C ] D, L
Back Scale: [ S, S&T, T ]
Cursor: 3 hairlines
Back Advertising: Maxon Premix Burner Co. Muncie, Indiana
Donated by David Hecht, Alexandria, Virginia


Diwa 601-1 Rietz V1 Promo: Components Inc., Arizona Div.

ISRM 12.06.24.35
Diwa 601-1 V1 Rietz Promotional - dc294
Made in Denmark - All Plastic
Front Scale
5.5in // K, A [ B, CI, C ] D, L
Back Scale: [ S, S&T, T ]
Cursor: 3 hairlines
Back Advertising: Components Inc., Arizona Div.
Donated by the Anonymous Collector and daughter.


Diwa 601-1 Rietz V2 Promo: Fansteel
ISRM 15.07.20.07
Diwa 601-1 V1 Rietz Promotional - no Date Code
Made in Denmark - All Plastic
Front Scale
5.5in // K, A [ B, CI, C ] D, L
Back Scale: [ S, S&T, T ]
Cursor: 3 hairlines
Back Advertising: Fansteel, North Chicago, Illinois.
Belonged to: R.W. Kratz
Donated by son, Nick Kratz, Pasadena, California


Diwa 601-1 Rietz V1 Promo: ITT Cannon Electric
ISRM 14.10.15.06
Diwa 601-1 V1 Rietz Promotional - dc276
Made in Denmark - All Plastic
Front Scale
5.5in // K, A [ B, CI, C ] D, L
Back Scale: [ S, S&T, T ]
Cursor: 3 hairlines
Back Advertising: ITT Cannon Electric
Gift of Edward Wright, Odenton, Maryland.


Diwa 601-1 Rietz V2 Promo: Grundfoss Bjerringbro Pumpefabrik

ISRM 12.06.24.36
Diwa 601-1 Rietz V2 Promotional - dc012
Made in Denmark - All Plastic
Front Scale
11cm, 4.5inch // K, A [ B, CI, C ] D, L
Back Scale: [ S, ST, T ]
Cursor: 3 hairlines
Back Advertising: Grundfoss Bjerringbro Pumpefabrik A/S (Pump Fabricators)
Donated by the Anonymous Collector and daughter.


Diwa 611 Electro Pocket

ISRM 12.03.02.16
Diwa 611 Electro Pocket
Made in Denmark - All Plastic
Front Scale
13cm // Cos1, A(Kw) [ B(HP), CI, C ] D, Cos2
Back Scale: [ S, S&T, T ]
Well scale: Dyn-Mot, V
Cursor: 3 hairlines
Back Advertising: POHJOISMAINEN SÄHKÖ-OSAKEYHTIÖ
Donated by Richard Davis, Las Vegas, Nevada


Diwa Ideal No. 701 Export

ISRM 13.09.24.01
Diwa Ideal No. 701 Export
Made in Denmark - All Plastic, with blue highlight on stock.
Front Scale
L, K, A [ B, CI, C ] D, S Cos, ST Arc, T Cot
Back Scale: 25cm, DF [ CF, C ] D, 0-8 inch, 8-0 inch
Cursor: 4 hairlines
Donated by Mikael Seierup, Denmark. Belonged to his father.




Diwa 710 Teknilog

REF
Diwa 710 Teknilog - Duplex
Made in Denmark
Front Scale
LL00, ST, T, DF [ CF, CIF, CI, C ] D, P, S, LL0
Back Scale
LL01, LL02, LL03, A [ B, L, K, C ] D, LL3, LL2, LL1
Cursor: 5 hairlines
Archive - Marion Moon Collection


Diwa 720 Polylog

ISRM 12.06.24.19
Diwa 720 Polylog - date code 320
Made in Denmark
Front Scale
LL00, L, K, A [ B, S, ST, T, C ] D, DI, P, LL0
Back Scale
LL01, LL02, LL03, DF [ CF, CIF, CI, C ] D, LL3, LL2, LL1
Cursor: 5 hairlines
Donated by the Huang Collection and daughter.
The collector, who prefers to remain anonymous, obtained a B.S. degree in Physics from Taiwan's National Tsing Hua University in 1971. His love for computation has encouraged him to build a collection of slide rules, HP and TI calculators, as well as abaci, many displayed at ISRM.


Diwa No. 730 Combilog

REF
Diwa No. 730 Combilog
Made in Denmark
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
Cursor: 5 hairlines
Archive - photos from Elena Diana Perucca, Argentina.


DIWA Darmstadt No. 851/4 Pocket Duplex

ISRM 12.11.20.02
DIWA Darmstadt No. 851/4 Pocket Duplex
Made in Denmark by DIWA
Front Scale
K, A [ B, CI, C ] D, P \\ 11cm 4in
Back Scale
L, S Cos [ LL1, LL2, LL3 ] D. T Cot
Mulitiple hair-lined cursor
Donated by Ron Dies,Vancouver, British Columbia, Canada
Ron Dies purchased and used this slide rule (see also his Hughes-Owens 1771 slide rule in the Hemmi gallery) when he was studying architecture from 1956-1962 at the University of Manitoba in Winnipeg. He used these slide rules until electronic slide rules became more useful in his career. He is currently owner of Ron Dies Architecture in Vancouver and is near retirement.


Diwa 911 Log Log Deci-Trig Duplex

ISRM 09.01.12.93
Diwa 911 Log Log Deci-Trig Duplex
Made in Denmark (closely resembles early Dietzgen patents and construction)
Material: Laminated wood with metal braces.
Front Scale
LL0, LL00, A [ B, T Cot, ST, S Cos, C ] D, DI, K
Back Scale
L, LL1, DF [ CF, CIF, CI, C ] D, LL3, LL2
Donated by David Hecht, Alexandria, Virginia
David's first SR was a circular Pickett 101-C, which he acquired in high school. His interest led his parents to give him a K&E 68-1210 as a graduation gift. After college, David worked fifteen years for the U.S. Navy as a contracting officer and is now retired from Civil Service. His slide rule collection specializes in Picketts and he enjoys traveling to board game conventions. Member of the Oughtred Society. Donor of numerous slide rules to ISRM and its SR Loaner Program.

Norden



Norden-SKF

REF P060
Norden-SKF
Made in Sweden
Front Scale
14cm // K, A [ B, CI, C ] D, L \\ sin cos
Back  Adv: SKF
Back Scale
[ Log, tg ctg, P ]

TEKNOR

Not much is known about this brand of slide rule, and whether or not it was distributed out of the USA, UK or Europe. The specimen shown in this gallery was obviously made in Japan by Uchido Yoko, Co (was Hemmi) which mas an OEM for re-branded slide rule catalog distributors. Other re-branded models with the Teknor label were made by UTO in Denmark such as the UTO 930U Poly-e. An ebay search reveals these other models:
TEKNOR NO.1055 Grundskola (Elementary School in Swedish) Slide Rule
TEKNOR No.1061 Högstadium (High School in Swedish) Slide Rule
So the distributor is determined to have been in Sweden.


Need TEKNOR No.1055 Grundskola Slide Rule or image

Need TEKNOR No.1061 Högstadium Slide Rule or image


TEKNOR No.1081 Gymnasium

ISRM 12.03.02.08
TEKNOR No.1081 Gymnasium
Made in Japan for Swedish Distributor TEKNOR (by Uchida Yoko, Co)
Note: Exactly the same as Technical Sales 1081 TechLog Emblem Series
Front Scale
LL01, LL02, LL03, A [ B, L, K, C ] D, LL3, LL2, LL1
Back Scale
T2, T1, ST, DF [ CF, CIF, CI, C ] D, P, S Cos
Cursor: Multiple Hairlines
Donated by Richard Davis, Las Vegas, Nevada

UTO
Including HOFFMAN branded models



UTO No. 1 Studium

ISRM 09.01.12.125
UTO No. 1 Studium
Made in Denmark
Front Scale
A, DF [ CF, CIF, CI, C ] D, K
Back: Blank
Donated by David Hecht, Alexandria, VA


UTO 503 Studium

ISRM 09.01.12.126
UTO 503 Studium
Made in Denmark
Front Scale
27cm // L, K, A [ B, CI, C ] D, ST, T, S
Back: Blank
Donated by David Hecht, Alexandria, VA


UTO 561 Studium

ISRM 09.01.12.127
UTO 561 Studium
Made in Denmark
Front Scale
27cm // L, A, DF [ CF, CI, C ] D, ST ST, T Cot, S Cos
Back: Blank
Cursor: 3 Hairlines
Donated by David Hecht, Alexandria, VA


UTO 601 (Yellow Slide) Promo:NORTH
ISRM 14.10.15.05
UTO 601 (Yellow Slide)
Made in Denmark
Front Scale
5inch // K, A [ B, CI, C ] D, L
Back Scale:
[ S, S&T, T ]
Back Adv: NORTH
Gift of Edward Wright, Odenton, Maryland.


UTO 601 Hoffman

ISRM 14.01.10.05
UTO 601 Hoffman
Made in Denmark
Front Scale
5inch // K, A [ B, CI, C ] D, L
Back Scale:
[ S, S&T, T ]
Back Adv: Raymond Concrete Pile Division
Donated by Bill Wehrend Collection, Palo Alto, California.


UTO 601 - Hoffman - Cyanamid

REF P059
UTO 601 - Hoffman - Cyanamid
Made in Denmark, Distributed by Hoffman, USA
Front Scale
5inch // K, A [ B, CI, C ] D, L
Back Slider
[ S, S&T, T ]
Back Adv: Cyanamid [Phospahtes]


UTO 601 - Hoffman - Lennox

REF P018
UTO 601 - Hoffman - Lennox
Made in Denmark, Distributed by Hoffman, USA
Front Scale
5inch // K, A [ B, CI, C ] D, L
Back Slider
[ S, S&T, T ]
Back Adv: Lennox Industries Inc.


UTO 601 - Hoffman - Morris

REF P132
UTO 601 - Hoffman - Morris
Made in Denmark, Distributed by Hoffman, USA
Front Scale
5inch // K, A [ B, CI, C ] D, L
Back Slider
[ S, S&T, T ]
Back Adv: Morris Pumps, Baldwinsville, NY
Original Owner: WKM


UTO 930U Poly-e

REF S541
UTO 930U Poly-e
Made in Denmark
Front Scale
L, K, A [ B, T Cot, ST, S Cos ] D, DI, P
Back Scale
LL01, LL02, LL03, DF [ CF, CIF, CI, C ] D LL3, Ll2, LL1
Original Owner: Robert Millar/Canada


UTO 930 Studium - Charvoz

REF
UTO 930 Studium
Made in Denmark
Front Scale
LL01, LL02, LL03, A [ B, L, K, C ] D, LL3, LL2, LL1
Back Scale
ST, T, T2 DF [ CF, CIF, CI, C ] D, DI, P, S
Archive - Rod Lovett collection


UTO 930 Studium

ISRM 09.01.12.110
UTO 930 Studium
Made in Denmark
Front Scale
LL01, LL02, LL03, A [ B, L, K, C ] D, LL3, LL2, LL1
Back Scale
ST, T, T2 DF [ CF, CIF, CI, C ] D, DI, P, S
Cursor: 3 Hairlines
Note: Very poor red ink, be careful in cleaning this model
Donated by David Hecht, Alexandria, VA


UTO Nr3-931U Poly-e Studium

ISRM 09.01.12.124
UTO Nr3-931U Poly-e Studium
Made in Denmark
Front Scale
LL01, LL02, LL03, A [ B, L, K, C ] D, LL3, LL2, LL1
Back Scale
ST, T, T2 DF [ CF, CIF, CI, C ] D, DI, P, S
Cursor: 3 Hairlines
Note: Very poor red ink, be careful in cleaning this model
Donated by David Hecht, Alexandria, VA


UTO 932 - Charvoz

REF
UTO 932 - Charvoz
Made in Denmark for Charvoz
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
Archive - Rod Lovett collection


UTO F2145

ISRM 09.01.12.123
UTO F2145
Made in Denmark
Front Scale
11cm 4in // K, A [ B, CI, C ] D, L
Back Scale
[ S, S&T, T ]
Cursor: 3 Hairlines
Original Owner: C.W. Wright, Paris, Kentucky, USA
Note: Very poor red ink, be careful in cleaning this model
Donated by David Hecht, Alexandria, VA

J.H. Weil & Co.



J.H. Weil & Co. Polylog 1140 Duplex

REF
J.H. Weil & Co. Polylog 1140 Duplex
Made in Denmark
Front Scale
LL01, LL02, LL03, DF [ CF, CIF, CI, C ] D, LL3, LL2, LL1
Back Scale
L, K, A [ B, T Cot, ST, S Cos ] D, DI, P
Archive - Steve Seale Collection

Copyright © 2003-2017 International Slide Rule Museum