Shock absorbing, easily calibrated vial system for a carpenter's

Geometrical instruments – Indicator of direction of force traversing natural media – Level or plumb – terrestrial gravitation responsive

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Details

33385, G01C 900

Patent

active

059920335

ABSTRACT:
A carpenter's level provides a three point mounting for a vial housing within a level frame. The frame is a square cylinder, preferably an extruded part. The vial housing mounts within the frame on a pivot pin and is biased by a spring toward one side wall of the frame where the vial housing abuts the side wall on a pivot ridge extending from the housing. The pivot pin provides a camming surface so that the vial housing may be rocked slightly to a new position in order to re-align the vial housing within the frame.

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