Collision risk assessment system
Color coded football yardage measuring sleeve
Columnar sundial
Combination arrow quiver and sight support mount
Combination bow sight
Combination geodetic transit compass and signal mirror
Combination laser level line and plumb line generator
Combination level
Combination optical and iron sight system for rocket launcher
Combination range pole and bubble-level therefor
Combined story pole and elevation rod
Compact multifunction sight
Compact optical calibrating apparatus for multiple orientations
Compass
Compass including means for displaying constellation data
Compensator bow sight
Compound bow rifle sight system
Compound lever bow sight
Computerized simultaneous laser marking and targeting system
Construction laser