Check the listing for details. Vintage Date Finder Slide Rule – Industrial Engineering Tool – USA. Condition: Used. Listed at 14.00 USD. • “DATE FINDER”. • Slide rule collectors. 1950s–1970s (mid-century industrial). • “Set arrow at present date / Read future date above number of weeks”. • Set the arrow to the present date. Circular format (see photos for scale).
You may also like
$84.36
Concise Ruler Circular Slide Rule No.300 100829 110mm JAPAN
$10.95
Vintage POST Slide Rule 1447 Japan Sun Hemmi, Original Box 10” Student
$12
Vintage Pickett Microline 120 Yellow Slide Rule Engineering Math Tool with Case
$18.04
Chance RT-50 Transit Coach Slide Rule Automotive Fuel Cost Per Mile - Vintage
$23
Vintage Keuffel & Esser K&E Slide Rule 4161-3 with Case. Made in USA
$32
Vintage Slide Rule LOGAREX 4542 - Czechoslovakia 1970s
$25
Vintage Soviet logarithmic slide rule USSR in the original case Made in 1976
$44.54
Vintage NESTLER Pocket Slide Rule No.11D with Leather Case
$9.95
Vintage Frederick Post Co. 1447 Bamboo Slide Rule Ruler w/Box Made in JAPAN
$15.95
Cardboard Calculator B Vintage Lot 1950s Slide Carpenter Tubing Aeroquip Hanna
$12.25
Frederick Post Co. No. 1446 Sun Hemmi Japan Bamboo Slide Rule , Rule Only.
$19.75
Vtg Relay Ideal Bamboo Slide Rule #403 Computation Leather Case Japan