F.338 Data Sheet MJS-p-0050

noID, Comparative Rule, c.1880

Serial Number or Date Stamp:

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

General Description: Early linear alcohol/gauging slide rule

Length of 1 decade = 9 in, and overall scale length = 9 in. The largest physical dimension is 9 in.

Front Scales: shillings/gal [ strength over/under proof ] shillings/gal

Back Scales: gallons [ strength over/under proof ] gallons

Notes: nice boxwood Comparative Rule for alcohol taxation, likely from a Sikes’ hydrometer set; one side does comparative values; other side does reducing calc

References: http://osgalleries.org/journal/pdf_files/10.1/V10.1P30.pdf

Date Acquired: 05/14/2019