G - Physics – 01 – C
Patent
G - Physics
01
C
340/135.2
G01C 9/02 (2006.01) G01C 9/06 (2006.01) G01C 9/12 (2006.01)
Patent
CA 1089948
DIGITAL LEVEL INDICATOR ABSTRACT A level indicator providing a digital display of gravity-related attitude comprises a capacitive gravimeter pickup assembly the complementary capacitor pair of which are alternately switched, on an equal-time basis, into an R.C. oscillator circuit. Concurrently, each oscillator pulse train is switched, respectively, into the up- and down-mode of reversible counting means to yield a net oscillator frequency difference directly, digitally indicative of the degree of departure from a gravity-referenced level condition.
297404
Borden Ladner Gervais Llp
Keuffel & Esser Company
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