F.266 Data Sheet 266

Richardson, 1776, c.1912

Serial Number or Date Stamp:

Country: USA Primary construction material: ss Case included?: box

Length of 1 decade = 10 in, and overall scale length = 10 in. The largest physical dimension is 10 in.

Front Scales: K S A [ B CI C ] D T L

Back Scales:

Notes: 1776 Simplex; nice condition’ Richardson Rule Works

References: https://www.sliderulemuseum.com/Richardson.htm; JOS V28.1 p11

Date Acquired: 09/12/2020