Aligning two co-axial telescopes has always been a challenge. Scope rings require adjusting up to six individual screws to provide alignment. Then the slightest bump can knock the telescopes out of alignment.
The Libra Alt-Az mount was designed to make this alignment task simple and painless. Using a pair of clamps on one side to attach the female dovetail receiver to an existing male D-plate, the #19230 will fit directly on to any "D" style dovetail bar. A second pair of larger knobs on the opposite side provide both altitude and azimuth adjustments. A locking thumb nut secures the fine thread adjustment shaft for easy "no tools" installation and configuration.