Car seat level indicator

Carpenter's level

Carpenter's square

Chalk line apparatus

Circuit for levitated ball inclinometer

Clamping level tool

Clinometer

Clinometer

Clinometer

Clinometer with rolling liquid conductor

Clinometer/accelerometer and method

Clinometric sensor

Collapsible level and utility device

Combination interlocking segmented level

Combination level, plumb tool with single-hand engagement

Combination plumb and level device

Combination plumb or level and height setting instruments

Combined distance and gradient gauging apparatus

Combined leveling device and laser pointer

Combined string line anchor and plumb bob