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NEW Crayford 2 Speed Micro Focuser 10:1 Ratio For 8-10'' Tubes!
This focuser has a 10 to 1 ratio using a 2 speed micro fine adjustment focus. Constructed of strong aluminum with a black anodized finish, the new 2 speed micro Crayford focuser design gives zero image shift and zero backlash. This is the perfect upgrade for the telescope that uses 2" eyepieces. The focuser glides on 4 bearing wheels, with a built-in tension knob for adjusting the "feel" to match your preference.
Base is curved for 8''-10'' tubes. The minimum height with the 1.25'' adapter is 3.375''from base and without the adapter is 3.25''. Fully extended the focuser is 5.25'' w/adapter from base and w/o adapter is 4.875''. Tube travel is 1.625''. The base is 3.5'' x 3.5'' The from screw holes measured from center of holes are 2.75'' apart. The front hole to the back holes are 2.875'' apart.
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