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Measuring machine, made by Joseph Whitworth & Company

Hand and Machine Tools

1850-1860

Steelyard ammeter, 1885

Electricity Supply

1885

Map measuring wheel

Surveying

1880-1920

30cm T-rule

Surveying

Revolution counter

Hand and Machine Tools

Gimballed compass plate

Surveying

Viscometer measuring unit

Scientific Instruments & Research

1958

Map measurer

Surveying

1801-1840

Depthing tool brass

Hand and Machine Tools

Level and angle indicator

Surveying

1860-1910

Chinese foot-measure, in rosewood, Chien-Lung period, 1736-1796, showing four ancient Chinese feet ("Ch'ih"). Length 12.4"; 5/8 sq. section

Chinese foot-measure, Chien-Lung period

Weighing & Measuring

HF Testing device manufactured by W. Edwards & Co., England, c. 1960, 6 x 12 x 12 inches,

HF tester

Electronic Components

c. 1960

Course and Distance Calculator Mk.1

Course and Distance Calculator Mk.1

Aeronautics

Two paper discs, with a scale around the outside from vacuum tubes

Vacuum tube measuring disc

Electricity and Magnetism

1898