F.19 Data Sheet MJS-p-0334

Belcher Bros., Engineer’s Rule, 1831-1843

Serial Number or Date Stamp:

Country: USA Primary construction material: wd Case included?: no

General Description: Early linear Engineer’s slide rule

Length of 1 decade = 10.25 in, and overall scale length = 10.25 in. The largest physical dimension is 12 in.

Front Scales: in/12 in/6 || A [ B B ] D || ft/100

Back Scales: in

Notes: Belcher made earliest American-made Gunter, Carpenter, and Engineer rules, starting in 1821; label BELCHER/BROTHERS/MAKERS/NEW YORK is from 1831-1843

References: JOS 23.1 p38 (2014); History of My Ruling Family – The Belcher Brothers & Cos., Belcher Genealogy Foundation of Delaware; https://pactu.com/seven0610.2041/2f2fgb.htm

Date Acquired: 01/27/2024