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Archie Perkins' book on lathes and Marvin Whitney's book on marine chronometers give quite detailed descriptions of the use of these tools, the Levin book has some good info too. They are what a regular machinist would call a grinding attachment. They can produce excellent results, but the preparation of the laps and setup of the tooling is very time consuming. If you're looking for an easy way to finish balance pivots you're better off getting your basic turning on point and finishing in a jacot tool. If you want to avoid the jacot then wig wag tools (Perkins and Levin go into detail on them) are a much faster solution.

First of all I would demagnetise the watch. Remove the balance and clean it in some ronsonol lighter fluid. You might need to just demagnetise the balance again. You can test to see if the hairspring is clean and demagnetized by lightly touching the hairspring with your tweezers or a clean free from oil oiler; just make sure they are demagnetised. The same goes for any tools you use on watch movements.

Penetrating oil is very good. Leave it over night.

there are many posts on that very subject here on this forum (very good info.), but, i don't know how to direct you to them.

Dull....on the contrary...I think it is quite fascinating

Wig wag tools? Time for me to hit google. Sent from my iPhone using Tapatalk

This could be an eccentric 4th wheel, I didn't time it but the cycle seems close to a minute. Perhaps a bent pivot, perhaps damaged pinion leaves on 4th wheel. I don’t know this movement but if it is central seconds with supplemental pinion at center it could be bent and rubbing in center tube, same if ghe 4th wheel itself is central.

This is the watch I am wearing today. My son bought it for my birthday just the other day. Really like it. I changed out the watch band.

Hello all, it's a seven jewel caravelle.Nothing special but it works.The strap is easy. Piece of 3/4 inch nylon strap ,ends melted on the kitchen stove,fastened with a dritz heavy duty snap.simple ,stupid,easy.

Hi all For a while I have been struggling to get at my tools as I have kitchen units in my workshop, so I decided to do something about it so I went of to ikea and got a display cabinet the only trouble is now I think I need 3 more what do you think. Sent from my iPhone using Tapatalk

Laco Sport, an early enigma for me until I looked up the clues on the watch. D.R.G.M on the caseback stands for Deutsches Reich Gebrauchsmuster, a German Patent marking used between 1891-1945, so that is how I know its produced at the latest in 1945. Despite of it's Art deco look it has a Laco Cal.550 (Durowe) powerhouse and that was not produced until the start of 1940 according to Mr Ranfft. So the watch was produced sometime between 1940-1945. The next enigma that taunt me is why I never can find a suitable sub second to it, I realize I have two complete movements as spare but none with a sub second on it. Maybe if you have one lying around I might have something interesting to swap with......

And last but not least the gratuitous wrist shot! .... (bezel removed to see finish) Let me know what you think, thanks, James.

I have a fondness for Movado, especially Kingmatics. I had previously bought on off ebay but that had a bad main-plate https://www.watchrepairtalk.com/topic/2439-fellow-wrt-what-are-you-repairing-currently/?tab=comments#comment-24655 . I ended up buying a donor movement from a guy in Spain and the watch was back in service. Whilst browsing ebay I cam across this example. Advertised as not running with missing automatic weight. I got it for USD 40. Usually I would have steered away from it as parts for these movements are difficult to come by but I figured I had a good chance to get it running as I had a mostly complete movement with a good balance and more importantly an automatic weight! Pic from the ebay listing as below. Sellers pic of the dial..dial has patina but it can be re-sued as its pretty even, a bit of degradation around the edges. Date-disc looks home-made though! Movement is pretty grotty..These movements have a nice silverish plating which is part of the allure.. hopefully this will clean up. Broken crystal... simple enough to fix. Well the watch arrived and first impression is good. The balance staff is good but it wont tick.. the train is stuck. When I try to set the time I hit a dead spot, looks like a teeth is missing somewhere. Then I removed the balance but the pallet fork doesn't swing. On close inspection it seems to be broken. Hmmm.. so far I'm still ok as these parts are available on my donor movement. Well I ended up using the following from the donor movement. The cannon-pinion (missing a tooth), pallet fork (broken pivot), clickspring (wasn't original), automatic weight (missing), dial (better condition) and date-disc (better condition). The dial was signed 'Gentleman' instead of 'Kingmatic' and has a slight defect in the 'gentleman' but it looks nicer. The crown on this watch is original but worn through. I'm hoping that the autowind can cope! The movement plates were cleaned but this is the best I could achieve. The silver plating is quite thin and aggressive polishing can wear through. The bent lug will stay as it wont be so noticeable with a leather strap. Personally, I think this is one of the best looking automatic weights around! The automatic module makes a nice 'zzzz' sound when it spins.. part of the charm of its watch. Mechanically its pretty straight forward with no surprises. The only thing a bit different from other automatics is the mainspring does not slip. Instead there is a clutch built into the ratchet wheel and the crown wheel winds through a spring-loaded secondary wheel. Anilv

The Babe Ruth Benrus was part of a Benrus advertising campaign - "Babe Ruth wears a Shockproof Benrus Watch."

I'm very pleased to share that I finally acquired 2 watches that have been in my radar for a while . The first I received today . It is a vintage Hamilton Flight II hand wind . One of Hamilton's and Designer , Richard Arbib's many beautiful asymmetrical designs in both Electric and Mechanical movements . The watch: About 2 weeks ago I was able to get a very nice Breitling Chronomat automatic with a 7750 Valjoux movement . I truly have enjoyed wearing this watch everyday since I've had it ,...although I did remove it to give the Hamilton a spin around the block .