Telescoping measuring rule

Details Telescoping measuring rule Telescoping measuring rule

1981-10-06

1983-08-23

Stearns, Richard R.

Geometrical instruments

Area integrators

Electrical

33451, 33494, G01B 308

Patent

active

043996167

ABSTRACT:
A measuring rule consists of a plurality of sections which can be displaced telescopically relative to each other and have a first scale for outside measurement which begins at zero at the outer end of one end section. Said sections also have a second scale for inside measurement which begins at the outer end of one end section with a value equal to the length of the measuring rule when the sections are fully contracted.

REFERENCES:
patent: 149532 (1874-04-01), Sherwin
patent: 844536 (1907-02-01), Prindle
patent: 1028507 (1912-06-01), Voggenreiter
patent: 1338176 (1920-04-01), Finstrom
patent: 1488482 (1924-04-01), Eckman
patent: 1623897 (1927-04-01), Williams
patent: 1848003 (1932-03-01), Chalupny
patent: 2270227 (1942-01-01), Swanson
patent: 2270355 (1942-01-01), Swanson
patent: 3492737 (1970-02-01), Swanson
patent: 3526040 (1970-09-01), Young

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