Retro-reflective target wafer for a position determination...
Rifle scope vertical alignment apparatus and method
Rifle-type gun sight for an archery bow
Riflescope elevation adjustment assembly
Riflescope reticle
Road delineators
Rocker clip assembly
Rotary boring tool alignment and depth indication system
Rotary laser irradiating system
Rotary laser irradiating system and photodetection system
Rotary target V-block
Rotatable disc support arrangement for angle measuring apparatus
Rotatable light leveling device
Rotating and driving system for survey instrument
Rotating arm aiming device system
Rotating cap adjustable bow sight
Rotating disk peep sight system
Rotating laser transmitter
Rotating pin sight
Rotating reflector prism and target