Special NM 03 Windage Knob??

[Phil McGrath]

Real or not? Someone mentioned too me Brophy's pg. 531 and drawing 2822 and C75665. Not having Brophy's book I just cant look for myself but my gut says NO. Anyone have one or can someone post a picture of it if they have either or?

[Art]

Not,

P 531 is in the tools section. The pictures on P. 531 are of windage knob wrenches.

[PhillipM]

Years ago someone showed a picture of the tool used to spin off the rear sight used by armorers and said it was an NM sight tool.

Someone said it was an armoer's tool and the poster replied the NM sights were so tight it required the hand crank.

I'd like to know the truth

[Parashooter]

Far from being too tight, NM sights should be set up for smooth adjustment without undue force (or slop).

The two tools shown on p. 531 are designed to facilitate turning the windage knob so the movable base can be removed from the fixed base - and for reversing the process to reassemble. Both actions take a lot of turning. While this can normally be done without tools, if we have to do a bunch of them it not only gets tedious pretty quick but inflicts considerable wear and tear on thumb and index finger - and takes a bunch more time than it does with the handy tool.

Guitarists and luthiers often employ a similar device to facilitate removing and installing strings. Again, not really necessary but it sure saves time -

30763

Short video at https://www.youtube.com/watch?v=VVGBTj-DHUM shows string winder in use.

[Phil McGrath]

Not, P 531 is in the tools section. The pictures on P. 531 are of windage knob wrenches.

Yea, thanks that's what I was figuring. The tool used too unwind the sight base.

[Roadkingtrax]

Taking the rear sight on and off a few times in a row will do a number on the fingers. Ask me how I know!

A rear sight that is binding, is no better than one that exhibits backlash as Parashooter eluded to. John Beard had a trick to keep the threads engaged, much like M1/M14 rear sights. You have to go past your desired setting, then back it up. Hard to do with 4 MOA between you and the next line!

[Johnny P]

This is one of the sight removal tools. Arm is stamped SA2882 and a stylized:

Walden
Worchester
Made in USA

http://i57.tinypic.com/140got3.jpg

[Phil McGrath]

Thanks for the pic.

[JOHN COOK]

I think there were two sizes, one for small and one for large knobs. I have know idea when large and small came into use, but I have one as pictured above.


john

[chuckindenver]

there are some windage knobs with a drawing number on them.. post 1937...not NM

[Phil McGrath]

there are some windage knobs with a drawing number on them.. post 1937...not NM

Sorry Chuck, I was not to clear in my first post but everyone else made sense of what I was trying too say. The tool is use too remove the sight base, not as a special rarely seen NM sight crank.