Vernier gauge

Details Vernier gauge Vernier gauge

1985-04-11

1986-06-24

Little, Willis

Geometrical instruments

Straightedge type

33531, 33532, 33143R, G01B 338, G01B 356

Patent

active

045960755

ABSTRACT:
A vernier gauge includes a first arc member having a first radially inner side and a first radially outer side, a second arc member having a second radially inner side and a second radially outer side slidably engaged with the first radially inner side, having a second free end and a second clamped end and provided with a second scale, a third arc member having a third radially inner side slidably engaged with the first outer side and a third radially outer side, having a third free end and a third clamped end and provided with a third scale, the third arc member together with the first and second arc members defining a free space at the center of the first, second and third arc members, two intermediates each of which has a first end provided on one of the second and third free ends and a second end and is capable of moving radially with respect to the arc members and two measuring pieces each of which has a first engaging end pivotally connected to the second end and a second engaging end pivotally interconnected with each other so that with the two measuring pieces contacting with two sides of an object to be measured, the angle stretched by the two sides can be read from the second and third scales.

REFERENCES:
patent: 3252223 (1966-05-01), Gettel
patent: 3453738 (1969-07-01), Lipski, Sr. et al.
patent: 3579841 (1971-05-01), Peterson

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