G - Physics – 01 – C
Patent
G - Physics
01
C
33/110
G01C 9/18 (2006.01)
Patent
CA 1184026
PITCH MEASURING APPARATUS ABSTRACT OF THE DISCLOSURE A pitch measuring device for measuring the deviation of one line or plane from a referenced line or plane. The device comprises a pitch vial including a cavity containing a liquid and a bubble hermetically sealed therein. Indicia, pre-calibrated to the axis of the vial body, are applied to the vial body to provide a visual display of the amount of pitch of a measured surface by reference to bubble position in the vial cavity in relation to the body indicia. The vial cavity is symmetrically disposed about the vial axis with a larger radius at one end than at the other of the vial to provide pre-selected bubble orientation in response to selected pitch conditions.
402289
Bereskin & Parr
Wright Randall J.
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