Damping system and method for a pendulously supported...
Dartboard positioning device and method
Datum line gauge system
Datum plane setting device
Day and night gun sight apparatus
Day and night weapon sights
Day and night weapon sights
Day/night weapon sight
Day/night weapon sight
Day/night weapon sight
Deadband error reduction in target sight stabilization
Detachable hologram assembly and windage/elevation adjuster for
Detachable zero-set scope mount for hand guns and other firearms
Determination and passing on of a target direction for tanks
Device and a method for sizing odd parts of drywall for...
Device and method for alignment of components
Device and method for locating astronomical objects
Device and procedure for aligning of components
Device for adjusting a sight
Device for adjusting the angle of a sighting unit to a target