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Hello...I have recently acquired a nice original late production model 20 in 250/3000. The only deficiency is the Elevation Knob is missing from the Lyman 54. I have been searching but no luck as of yet . Wondering if someone might be able to help or give me some direction . Many thanks
Art

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How much is missing? There is the locking knob itself and a little sliding nut that rides behind the elevation slide. A guy with with a lathe and some files can make those parts pretty easily.


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Thanks for your response..it appears to me that just the knob is missing,however i am not at all familiar with this sight. At present someone has placed a small lock washer and brass nut in place of the knob. The elevation slide moves freely up and down but I don't see a little sliding nut that you refer to behind it. What's the purpose of the sliding nut..it seems that the locking knob would keep the elevation slider firmly in place. If it would be helpful I can try and post a few pictures later today. Thanks ever so much for your interest. Art

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Pics would be good, as close in as you can get, with and without slide in place..


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Im attaching some photos that I hope will be helpful.
Thanks,
Art.
PS Photos are too large for viewing on this site. I have to make some adjustments.

Last edited by 8888_902; 10/03/17.
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Pictures attached

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IMG_0136 (1).JPG (89.67 KB, 46 downloads)
IMG_0937.JPG (59.09 KB, 37 downloads)
Last edited by 8888_902; 10/03/17.
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The threaded stud is part of the sliding nut (for lack of a better term) I referred to. It simply provides more range of movement for the elevation slide. I would suggest you simply take it out and give it to a machinist to make a knurled threaded knob. I did that for mine once.


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Thanks for your interest and suggestion..that's certainly an option . Of course my first choice is an original knob.I'll check out the local machinists' and in the meantime keep looking for an original. If you know of anyone that might be willing to part with one ,please let me know. Thanks again
Art

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I think such an item would be more rare than anything you ever searched for. I would just have one made and call it a day.


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I talked to a machinist this AM and he can certainly make one ...he wanted to know some dimensions .I have never had one in hand , only from a photo. If you have one , could you make some measurements for me . Much appreciated.
Art

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I made mine 1/2" in diameter, but wished I had made it larger- barely able to tighten securely. Were I to do it again, I would go 5/8 or even 3/4. Ask him to knurl the circumference to allow a good grip, and a screwdriver/coin slot is a good idea if diameter is held to a minimum.


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Thanks for your direction and help...appreciated,
Art


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