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

Parts

Two micrometer surface testers used together and with electr

Two micrometer surface testers used together and with electr

Object Number:
1931-780/3
type:
surface flatness testing system