610886 Tilt Mounting Base:
Accommodates with all alignment telescopes and collimators. A steel plate provides support for two bronze “vees” that adjust from a spacing of 6¼” to 9½”, center to center. Has a tilting range of approx. 1.25° both horizontally and vertically. Instrument carrier may be rotated with respect to the bottom plate through 360°. Base has standard internal thread. Also available as a rotating mounting base (610089).