Adjustable spirit level construction

Air-bubble level for portable tools

Alignment device utilizing components responsive to gravity

Alignment gage for dish antenna

Angle finding device

Angle meter and spirit level

Apparatus for measuring lateral inclination of a roadway with er

Attachment for a power saw to make plumb cuts

Attachment for a power saw to make plumb cuts

Azimuth angle measurement system and method for operating...

Azimuth measuring apparatus and method

Block lock/leveler

Bore sighting apparatus, system, and method

Car door mirror equipped with bearing magnetometer

Compass mechanism used in combination with handle or like elemen

Compass, in particular for ski and competition track finding

Decorative frame molding

Device and method for arranging a flat panel display

Device for measuring the tightening angle on a wrench

Directing instrument