Micrometer surface testers

Made:: 1911 in Teddington

maker:: National Physical Laboratory

Two micrometer surface testers used together and with electric bell system to measure divergence from flatness of large plane surfaces; designed and used by Dr. P.E. Shaw for experimental work in 1911.

Details

Category:: Industrial Metrology

Object Number:: 1931-780

Materials:: cast iron, steel

Measurements:: each of two: 11.5 x 33.6 x 2.7 cm

type:: surface flatness testing system

credit:: Professor P.E. Shaw

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Parts

Two micrometer surface testers used together and with electr

Box for two micrometer surface testers used together and with electric bell system to measure divergence from flatness of large plane surfaces; designed and used by Dr. P.E. Shaw for experimental work in 1911.