Burnishers and jasper stone - NAWCC Forums
2006年8月17日 · Perhaps another source can provide some expert info. There appears to be two kinds: one is a semi-precious stone, a variety of chalcedony and another is the one used for polishing which I believe is compressed rouge. I have a triangular jasper stone in a pen-like case which certainly appears more like the latter.
Jasper Stone Charlestown Mass. Newark watch Co - NAWCC Forums
2014年9月12日 · Jasper is a form of gem stone. RM . geo.ulrich Registered User. Apr 10, 2013 221 92 28 Alton Il. Country ...
Cornell Watch Co. Serial Number Database | NAWCC Forums
2024年8月17日 · California Watch Co., San Francisco: 23xx7 California Watch Co., San Francisco: 23672 (KW), 23681, 23697 ...
Atmos Hand Puller - NAWCC Forums
2024年12月8日 · A rough and fine stone. 1/4 inch end mill. Dial Caliper or micrometer Lathe with ability to cut off, face and drill. Mill Sensitive drill/watch maker lathe Dremel with cutoff wheel Construction. Start by placing the 1/2 round in the lathe. Face one end and drill a 5/64 hole at least 1.5 inches deep, take small pecks.
Another Collecting Story - NAWCC Forums
2024年11月30日 · - diamond end stone vs sapphire; - gold vs red lettering, - true bridge (1st 5 runs) vs false bridge (last run) you realize that certain 19j SS variants are pretty uncommon. For example, as I understand it, best estimate is that perhaps at a maximum, only 500 movements had a diamond end stone, and most of those were early in production, e.g. ca ...
Any tips on pivot polishing? - NAWCC Forums
2016年7月25日 · The stones I mentioned I now know from the video are jasper slips, gave a very fine finish. I quit using them a few months ago except on the very hard pivots that will ruin an ordinary burnisher. The pivot was wiped off before the picture and was quite dry.
Please Show the Most Recent Addition to Your Collection
2020年1月5日 · Hutchins strived to have the most complete repair shop outside of a watch factory, and in 1891 he traveled to the American Waltham Watch Company in order to receive training on repairing and adjusting Waltham's product line. This training was through George H. P. Stone of the adjusting department.
Replacing a screw set jewel, do you press the jewel into the brass ...
2015年9月9日 · Rock crystal is just a name for one of the transparent types of quartz, and there are many other varieties with different characteristics; amethyst, onyx, jasper, citrine, agate, the list goes on and on. These large jewels would presumably have been available to repairers originally, but I doubt if any now remain as NOS parts outside museums.
JUM/7 Pin Pallet Anchor, Anybody got a spare, with pins?
2023年11月26日 · This little clock has suffered at the hands of someone ignorant of its fragility (no, not me). Both anchor pins have broken off and, although I've bought a High E guitar string that is the right 0.010", I doubt I'll have much luck with a …
Keystone Watch Case Company USA | NAWCC Forums
2012年3月11日 · I received this watch as a gift from my son. It has Keystone Watch Case Company written across the front of the dial with USA underneath. The serial number is 529030. I'm trying to find out the age and value of the watch as I've read that Keystone Watchcase watches are fairly rare. It also...