NEW BYERS drives.These are the last large Byers drives. They can be used for larger telescopes, on either Declination or R.A. axis.
The precision-ground stainless worms are mounted in ball bearings. If you have a larger instrument, then these are the best.This order will include both a 572-th and a 584-th with matching worms/bearing housings. As you can see in the photos the 584-th gear has a bore of 10" to accept slip-clutch (not included, but can be supplied at additional cost)
I WILL SHIP FREE TO ANYWHERE IN THE LOWER U.S.
Edward R. Byers Co.
Filed under: Eyepieces & Accessories