Radiographic film inclinometer
Railroad track gager/leveler/linear measurer
Railroad vehicle for measuring the geometrical parameters of rai
Rasping level
Rate gyro wells survey system including nulling system
Rate gyro wells survey system including nulling system
Rate integrating gyroscopic aiming method and device therefor
Receptacle level
Recreational compass
Reduced volume digital inclinometer
Reference laser projector with optional self-leveling mode
Reference pointer for a compass display
Reflecting lighted level
Reflective compass device
Reliably sensing bubble leveling means
Remote fixture aiming device
Remote indicating compass
Remote indicating solid state compass
Remote indicating solid state magnetic sensor
Remote level sensing instrument