Bob's Knobs for FPI Protostar Secondary (10-24 collimation screw)
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Knobs for FPI Protostar Secondary (10-24 collimation screw)
Fits: FPI Protostar secondary assemblies using a 10-24 x 3/4 inch long set screw for collimation adjustment
Knobs: Black plastic, 16 mm (5/8”) diameter
Threads: Stainless steel
- These knobs will fit the FPI Protostar secondary assemblies with 10-24 x 3/4 inch long set-style collimation screws.