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K&E 4053-3, 10"

Keuffel & Esser 4053-3, 10" slide rule.

This is one of a series of similar K&E slide rules in different lengths - K&E4053-2 (8"), K&E4053-3 (10"), K&E4053-3F (10" but with magnifier and finer scale divisions) and K&E4053-5 (14").

D Scale length: 250 mm. Significant digits: 3 to 4.


Copyright 2012, Dave Hoyer.