Pentz
Parsons Scope Service is now repairing the "clicks" on my
15X STS. windage knob.   Charge is $90 with return shipping

beltfed/arnie

Another source is Shiloh Sharps.  They look exactly like the one on my 18x Unertl.   

Chris.

Pentz wrote on Jun 28^th, 2015 at 10:17am:


It would only take about 5 min. to find out. You can't hurt the scope by swaping the ocular lens bodys.

The threaded lens cell is made to adjust the clearity of the cross hairs, it's made to screw in and out to adjust for differing eye sight.

Measure the distance from the cross hair ring (it should be marked with the power of the scope) to get a return reference on both and then swap them and see if it increases the magnification.

If it does, do a fine adjustment of it by pointing it at the sky and screwing in or out to get a clear, well definded cross hair.

Frank

frnkeore wrote on Jun 28^th, 2015 at 11:14am:

Frank,

I remember a discussion with Gil about this, and lets just say that from the beginning of manufacture, Lyman should have marked the power directly on the main tube body, and not on the crosshair adjustment ring.

+1 on changing the ocular ring.  I do so from 15x to 20x -- the latter for outdoors usage, the former for indoors.  It seems older Lymans had the power stamped into the ocular ring rather than the cross hair retainer.  Both of my scopes were "older", making the swap easy.  I have a scope "body" mounted on each of two rifles, and depending on where they are going, i o move the eye piece.  I followed the advice of a previous poster -- measure the distance from a reference point to the ocular to get close to final focus; makes the process go pretty quick.  I am usually within +/-1.5 revolutions of focus.

I tested this theory today. I interchanged the eyepieces on both Unertl and Lyman target scopes. Unertl eyepeices were swapped between 4,10, and 20 power. The Lymans between 10 and 20 power. I intentionally used higher and lower powers so that the change would be significant enough to notice. Thinking that slight power changes might be more difficult to detect. My conclusion is that it makes no difference at all. A 4 power Unertl with the eyepiece from a 20 power Unertl is still a 4 power Unertl. A 10 power Lyman with the eyepiece from a 20 power Lyman is still a 10 power Lyman. I don't know what other folks are experiencing but this was my experience. I think I would notice a difference with this great a spread in the power.

Again, it would have been better if Lyman had stamped the power directly on the main tube body.
Some time back, there were some occurances of low power scopes being sold as high power scopes. The reticle adjusting rings or occular assemblies with the higher power marking had been placed swapped over onto lower power main tube bodies.
Buyer Beware!