Brand	Keuffel & Esser co.
Type	Slide rule
Release Date	1912-1915
length	8"
Serial Num.	N/A
Date code	N/A
Country of origin	N/A

Purchased at a flea market on August 20, 2022 (alongside PS-6700, Pickett Microline 120, Pickett N903-T, Sun Hemmi NO.1771). It's in relatively good condition with a minor crack in the wood on the bottom and came with its leather case. However, the leather case is missing the lid and is in somewhat rough condition overall.