Whitehill's calculator, on the decimal system : for the use of jewellers, goldsmiths, silversmiths, and others : containing tables shewing the value of any weight from one-thousandth part of the ounce or grain to 500 ounces, at rates from 1/- to 90/- per ounce or grain : also table of equivalents shewing the equivalents of old weights in decimals of the ounce troy
Whitehill & Whitehill
Place of Publication
overall: 3/4 in x 4 1/2 in x 5 5/8 in
"R. J. R. Piper Stansted" written in graphite on the first fly leaf.
Gwen Bell early book collection of algorithms, tables, and history of calculations
The Gwen Bell Early Book Collection of Algorithms, Tables, and History of Calculations