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Slide rule for exchange of weights and measures

1815

"Unique" 10 inch slide rule

1920-1950

Binks' burettes and a Wollaston slide rule

1814

3 radiation slide rules by the Light Military Electronics Dept.

Thacher's cylindrical slide rule, 1884

1884

M.T. slide rule for problems of vehicular movement

Wollaston's chemical slide rule, c 1820.

1820

1 Boxwood meteorologists slide rule, stamped "Cary * London" one slide, 13 1/4" x 15/16"

One boxwood meteorologists slide rule, stamped "Cary * London"

1790-1819

Improved Perry calculating slide rule, 10 inch; in case, scale of inches and fiftieths on bevel edge, special cursor of aluminium and glass with pointer attached for rapidly calculating engine diagrams, etc., cursor has broken hair line for easy reading, double faced with celluloid log-log scales along the whole length and bottom edges; printed list of constants etc., pasted at back

Perry calculating slide rule and case

1910-1911

Collection of 14 slide rules as used at the RAE, plus a cursor and 10 related instuction books.

Collection of 14 slide rules as used at the RAE

1 Boxwood actuaries slide rule, two slides stamped "Cary * London" 12" x 7/8"

One boxwood actuaries slide rule, two slides stamped "Cary * London"

1790-1819

George W. Richardson's Direct Reading Slide Rule, made in Chicago, with instruction booklet, copyright 1909, in cardboard box

George W. Richardson's Direct Reading Slide Rule

1909-1916