From:
Richard Sheepshanks
To:
Sir John Herschel
Date:
[10 August 1848]
Source of text:
TxU:H/M-0539; Reel 1093
Summary:
RS's progress in establishing standards of measurement. Lists objections to earlier methods of measuring. Compares various materials for use in making bars for measurement standards.
Contributor:
John Herschel Project