Leaderboard

My projects are all packed away and I have not touched a watch for a while, apart from replacing a quartz movement like for like in a Rotary and putting in batteries for friends and relatives. Stuff is settling down a bit so maybe not long until I am back and in a position to contribute once more. Wandering by the bank of the Tweed on a day out celebrating our 42nd wedding anniversary and happened upon a small water spring with a plaque. Pics below.

I have a Levin lathe that was missing a handle - that was today's little project and I thought I'd post some photos. The blank is small, .220" dia and less than an inch long. I turned the press fit section in big lathe then switch to a Pultra and did the balance by hand with a graver. Fun work, sort of like wood turning. The one I made is on the right, obviously not identical, but good enough for an eyeball job

Marc, what sort of material allowance for burnishing would typically shoot for?

I think thats the correct set (internal thread for crown) and what I have is a replacement, perhaps a generic Rolex. I ordered some aftermarket parts for this movement. If they dont fit, will have to spring for the $70 factory parts. Thanks for keep an eye out, I'll follow up when parts arrive. Sent from my SM-G920V using Tapatalk

There are 89 reviews on the page with 73 of those giving it 5 stars. They are what they are good mass market quartz watches I have had two chronograph Eco drive watches both pre owned, the five year warranty is good I bought a Skyhawk A-T for less than a hundred with 3 years of warranty left on it. The Eco drive system is good but if you wear the watch under a sleeve you really have to leave the watch next to a window to get enough charge when not wearing it.I had to do that today infact with the watch I have on which is a Casio tough solar it wasnt getting enough light under my sleeve and all the hands jumped to the 12 0'clock postion and the watch stopped. And if you dont wear it for a long time and leave them somewhere dark they can take an age to kick back into life especially the all singing dancing chronographs but the A-T did have a handy power indicator on the dial. And like any other capacitor watch it will eventually fail and need replacement.

Which timing machine are you using? Then you can't get an answer to your question as it's an invalid question. Unless a course I am totally misunderstanding your question then it may be a valid question. So first Link talks about mechanical watch testing And it explains how amplitude is measured. Quartz watches can be found in the second link. Unless of course and there were a few of these there were some quartz watches with a balance wheel. But as the balance wheel isn't driven by the escapement for the most part there may be an exception to that you have no way of measuring the amplitude. It is possible the timing machine is picking up the width of the stepping motor pulse confusing that with what it needs to pick up for amplitude and giving you a number. So typically a timing machine for quartz watches is entirely different than a mechanical watch timing machine. Although you can get timing machines that will do both. Then the problem with the ladies watches or any quartz watch without a second hand is that it does not step once per second. Especially on the ladies watches to save power they will step at a much longer time interval. http://www.witschi.com/assets/files/sheets/Test and measuring technology mechanical watches.pdf http://www.witschi.com/assets/files/sheets/Knowledge Quartz Watch.pdf