Parts for Hemmi and Post Slide Rules



Note: Shiping for most parts is $6 as they won't go through the USPS auto-feeders, unless I can get the thickness below 1/4-inch..
Terminology Item
1-3/4-inch-wide duplex slide rule Includes, but not limited to, Hemmi: 154 (20-inch), 200 (16-inch), 255-269;    Post: 1460 Versalog, 1491 Chem-Rule; Teledyne 44CA-600 Versalog.  All 1-3/4" duplex rules use the "new style" cursor.
1-5/8-inch-wide duplex slide rule Includes, but not limited to, Hemmi 150, 152, 153, 159, 250, 251;    Post: 1450 Versatrig, 1459, 1462H Postrig.
1-3/16-inch duplex slide rule 1-3/16 inches wide.  Not used after about 1935.  Parts not usually available but can use K&E 4088-3 cursor.
Pocket duplex slide rule Hemmi 149 & 149A;    Post 1451 Pocket Versatrig, 1461 Pocket Versalog
Old style duplex cursor Frame is flat and cursor screws have washers.  Used on 1-5/8" duplex rules until about 1955.  Early (1930s) screw directly into plastic cursor bar; later (after WW II) has brass inserts in cursor bar. 
New style duplex cursor Chrome frame is recessed at ends.  Used on all 1-3/4" Hemmi/Post duplex rules and on 1-5/8" duplex rules after 1955.


Parts for Hemmi and Post Slide Rules

Here's a list of just about every possible repair part for Post and Hemmi bamboo slide rules from the 1950s and later.  (For parts for other bamboo slide rules see the Relay/Ricoh (R/R) Parts Page.)  USED PARTS HAVE BEEN CLEANED AND RECONDITIONED.  The parts we can supply have a price listed. Quantities are limited (sometimes only one). If what you need is not available check back later or drop us an email; maybe we'll find one somewhere. Email us if you need something not on this list or if you're not sure what you need.

Note:If the OEM glass lens are shown as no longer available, we have Replica Laser cut acrylic lens for on the Restoration page $5 blanks or $10 if I add the hairline.

Fits  Item Part No. Price
Four-inch Closed Body with 17mm-wide face.:
Hemmi 30, 32, 35; Post 1440, 1441, 1447M.(For R/R 403 and other R/R 17mm-wide rules see R/R Parts Page.)
Flat Cursor Window Only. Pic 1472G $6 New
Complete Cursor, Flat. Pic 1472 $25 New
Complete Cursor, Magnifying.
Not available
Closed body rules with 15/16" (23.8mm)-wide face:
Hemmi 48, 34-series (before 1938).
Complete Cursor (Flat). Pic 1473 $25 New
Closed Body Rules with 26mm-wide face:
Hemmi 34-series (after 1938) including 34pi, 34RK etc, 54, 66-69, 74, 86, 87 92-95, 135, 136, 305, 2634; Post 1443, 1444, 1444K, 1453, 44DA-440.Not for early "extra thin" rules.
Complete Cursor (Flat). Pic 1470A $25 Used
Cursor Window Only. 1470AG Not available
Cursor window only for "extra thin" rules from 1930s.  Newly made.Pic 1470AGT $10 Reproduction
Closed Body Rules with 28mm-wide face:
Hemmi P33S, P45S, P37, 40, 40RK (to 1974), 45, P45, 47 etc, 50, 51, 2640; Post 1445, 1446, 1447, 1449, 1452 (narrow), 1455.
Cursor Window Only. See Spring Note below. Pic 1471G Not available
Complete Cursor (Flat).   Pic 1471 $25 Used
Clip-On Magnifier   Pic
Not available
Closed Body Rules with 34mm-wide face and single hairline:
Hemmi 50W, 50-20 (to 1951), 80, 80/1, 300, 2662, 2664, 2664S, Post 1452 (wide), 1452W, 1456. 
Cursor Window Only.   Single hairline. 1471WG N/A Ask
Complete Cursor [Flat] Pic
$35 Used
Closed Body Rules with 34mm-wide face and three hairlines:  Hemmi 64, 64T, 65, 80, 80/3, 81, 110, 301, 2690.  Post 1490. Cursor Window Only.  Three hairlines.   Pic 1471W3G Not available
Complete Cursor. Three Hairlines.   Pic 1471W3 Not  available
34mm-wide rules with calculating scale on bottom edge.
Hemmi 80K, 90, 90A, 91, 96, 130 (not 130W).
Complete 3-line cursor with tab for bottom SIN and TG scales.  (1471W3 cursor fits these rules but has no tab for bottom scales.)  Pic 1471WT Not available


Five-inch Bamboo Pocket Duplex Slide Rules.
Hemmi 149A; Post 1451, 1461.  Not for all-plastic P149A or Relay/Ricoh.
Complete Cursor.   Pic 1485-1/2 $40 New
Cursor Window Only.   Pic 1485-1/2 G $16 New
Cursor Screw.   Pic 1485-1/2 CScrew
 $3 New
Chrome Cursor Frame.   Pic 1485-1/2 Frame $7 New
Removable Cursor Spring.   Pic 1485-1/2 Spring $4 New
Plastic Cursor Bar, no spring.  Top and bottom bars are interchangeable.  Only top bar  needs removable spring sold above.  Pic
1485-1/2 Bar $7 New
Body/Stator Screw. 1485-1/2 BScrew $7 New
1.25-inch wide, bamboo duplex rules from early 1930s:
Hemmi 150, Post 1458, Lietz 3054L.   
Complete cursor.
$55 Used
1-5/8-inch-wide Bamboo Duplex Slide Rules.
Includes Hemmi 150, 152, 153, 159, 250, 251; Post 1450 Versatrig, 1459, 1462H Postrig and all other Hemmi-made 1-5/8-inch-wide bamboo duplex rules.  Not for plastic rules or Relay/Ricoh.
Cursor Window Only.   Pic 1475G Not available
Chrome Cursor Frame. 1475F $7 Used
Complete Cursor.    Pic 1475 $40 Used
Cursor Screw for old style cursors.  5 mm long.   Pic 1110 $3 Used
For parts that fit both 1-5/8" and 1-3/4" duplex rules see last category below.
1-3/4-inch-wide Duplex Slide Rules.
Includes Hemmi 154 (20-inch), 200 (16-inch), 255, 256, 257, 258, 259, 260, 264, 266, 269, 275, 279, 301; Post 1460 Versalog (I & II), 1491 Chem-Rule; Teledyne 44CA-600 Versalog, Hughes-Owens 1777, 341-3010, 341-3020 and all other Hemmi-made 1-3/4-inch-wide bamboo duplex rules. Not for plastic rules or Relay/Ricoh.
Cursor Window Only, OEM Glass. Limited Availability. Pic 1485G $15 used
Cursor Window Only, Laser-Cut Acrylic Pic L-HP-1 $10 new
Complete Cursor.   Pic 1485 $55 used
Chrome Cursor Frame.   Pic 1485F N.A
Cursor Screw for new style cursors.   Pic 1310 $3 Used
Clip-on magnifier.   Pic
Not available
For parts that fit both 1-5/8" and 1-3/4" duplex rules see below.
All Hemmi-made 10-inch and longer bamboo duplex slide rules.
(Both 1-5/8" and 1-3/4" wide.) Not for plastic rules or Relay/Ricoh.
Cursor screw for new style cursors. (1-5/8" rules after 1955 and all 1-3/4" wide rules.)  Pic 1310 $3 Used
Top Cursor Bar with fast or loose spring.   Pic 1480BT $7 Used
Cursor Spring (Removable) only.   Pic 1480S $4 New
Bottom Cursor Bar.    Pic 1480BB $3 Used
Body/Stator Screw.   Pic 1480E $7 Used
Hemmi plastic duplex rules 46mm wide x 5mm thick.; Complete Cursor.   Pic
N/A Ask
Hemmi plastic duplex rules 46mm wide x 4mm thick. Complete Cursor.
N/A Ask

Spring Note: Some closed body cursors from the 1940s have the spring mounted on a removable plate which is held inside the cursor frame by the cursor window glass. Windows for those cursors are about 1/32" shorter than cursors where the spring is attached directly to the chromed cursor frame; new glasses must be shortened by sanding with ordinary sandpaper to fit.

How To Order - Buying and Shipping

  • Small parts, like cursors and blocks: Unfortunately we had had a rash of parts destroyed or lost using USPS 1st class, so now we have to send parts out using USPS small package with tracking in a 7x5 in bubble padded envelope. Shipping is $7 for fasteners and lens, and cursors USPS Ground. Combine these items with one or more duplicate slide rule adoptions.
  • For slide rules look at the Duplicates page. Click on the comparable image or its accession number to see the matching slide rule in the ISRM archives.
  • The one selected and the one you will receive is a duplicate of this image, and in most cases is in better condition (exceptions noted).
  • Description of NOS = New Old Stock or NIB = New In Box.
  • If you desire an original manual (as available) include an extra $10. It may not be the exact model year.
  • If you want a photo of your selected slide rule before ordering, send us an email or we can text it to your phone.
  • When you make a PayPal donation, list the Accession #s of the items you want..
  • For every $100 gifted select a $10 slide rule from the list to throw in the stack for free.
  • A single slide rule costs $8 to ship. 5 slide rules cost $12. Shipping will be combined .Currently USPS is wanting $16 for a Priority Mail medium Flat Rate box. (holds up to 20 slide rules, without sleeves).
  • Make a reasonable offer. Most suggested fees are based on averaging past ebay prices over the last two years..
  • All proceeds go to supporting ISRM.
  • You can deduct your monetary gift that is in excess above the recommended fee on your U.S. taxes.
  • Satisfaction guaranteed.

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Use the secure button, and include a donation for shipping costs List the items by ISRM reference #. in the message to curator.

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