 Check out the bookstore at IRBS.com |
|
|
|
|||||
|
||||||
From: Philip Lange (no email)
Date: Mon Mar 20 2006 - 16:25:53 EST
To the list.
I have a not so old, 1968 , C.Plath sextant that I am trying to restore.
The thread that secures the pivot arm to the frame is buggered and needs a
to be chased. Trouble is I can not determine the proper thread. The screw
measures .089 +- (2.26 mm) in dia and I have counted and calculated 56 tpi.
(Measured by a caliper not a mike. Could be a little off.) The closest I
can find is a #2 56, but I doubt this as it is of German manufacture and I
suspect the thread is metric. I would buy a tap if I knew the right thread.
Watch and clock makers are not to be found in this neighborhood.
I know this is off the wall, but, can any one help me ?
Thanks
Philip
Philip & Marilyn Lange
AE4OV & KD4JRC,
S/V ORYOKI
Witness 35 Catamaran
http://www.oryoki.net
|