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Maintaining sharp, precise focus is easier than ever before
with the Explore Scientific Rack & Pinion Focuser. This 2"
dual-speed focuser features a 1.25" compression ring eyepiece adapter
for added versatility. Three set screws provide rigid stability for your
eyepiece, adapter, or another barreled accessory to ensure that
everything remains in place, leaving you to simply concentrate on the
This supreme quality focuser has 10:1 micro-focusing knobs to
go with a rough focus knob. Large knurled dials for a comfortable grip,
even if you have cold hands or are wearing gloves.