Inclination instrument

Details Inclination instrument Inclination instrument

G - Physics

01

C

33/105

G01C 9/12 (2006.01) E21B 47/022 (2006.01) G01C 9/16 (2006.01)

Patent

CA 1195838

ABSTRACT OF THE DISCLOSURE Inclination measurement apparatus having a housing, a reference pendulum mounted for swinging about one axis of the housing to respond to deviation of the housing means about such axis, an inclination indicator responsive to the inclination of such housing about another axis, and connected to such reference pendulum, whereby to adopt a predetermined reference position relative to such first axis, a movable locking device operable to restrain movement of such inclination indicator about such transverse axis and being release- able to permit such movement, the locking device being movable into and out of engagement with the indicator device to secure such indicator device against movement about such transverse axis.

430438

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