Parts for Hemmi and Post Slide Rules

Termnology

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

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.

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.

• 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.