Combined vernier gauge and protractor

Details Combined vernier gauge and protractor Combined vernier gauge and protractor

1990-10-10

1992-02-04

Haroian, Harry N.

Geometrical instruments

Distance measuring

Opposed contacts

33403, 33 1N, 33534, G01B 514

Patent

active

050849824

ABSTRACT:
A combined vernier gauge and protractor includes a primary rule having thereon a regular scale, a secondary piece slidable on the primary rule, and a protractor having a straight side pivotally mounted on and alongside the secondary piece. Such a device is provided in order that it can both provide the functions of a vernier gauge and a protractor. The secondary piece includes a vernier scale capable of cooperating with the regular scale to enable the present device to have a more accurate measurement.

REFERENCES:
patent: 878439 (1908-02-01), Wagniere
patent: 1040214 (1912-10-01), Kranz

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