Wollaston slide rule of chemical equivalents

Wollaston slide rule of chemical equivalents

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Science Museum Group Collection
© The Board of Trustees of the Science Museum

Sliding scales of chemical equivalents, has Jan. 1 181 clearly on the bottom and several values inscribed on both scales.

Details

Category:
Experimental Chemistry
Object Number:
1932-578/3
Materials:
wood (unidentified)
Measurements:
overall: 10 mm x 325 mm x 65 mm,
type:
slide rule (chemical)
credit:
Miss Althea M. Wollaston