Micrometer gauge

Geometrical instruments – Area integrators – Electrical

Patent

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Details

33170, 33163, G01B 318

Patent

active

044855567

ABSTRACT:
A spindle driving mechanism includes a spiral groove having a comparatively large pitch for transferring a spindle and an engageable portion to be engaged with this spiral groove. The spindle is provided with a rotation preventing device, and an indicator is driven by an axial movement of the spindle.

REFERENCES:
patent: 672622 (1901-04-01), Isherwood
patent: 2481078 (1949-09-01), Burwood

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