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Just a little side note on this - a lot of watches (with the ETAChron system) I get in have this problem: If you get a lot of positional error (sometimes by as much as 15secs/day differential) after service then check the index pin. If the hairspring is bouncing between the two pins then this 'could' be the cause of the positional error. Time and time again, I have turned the pins (from the top) until the inner pin is just touching (and effectively arresting) the outer coil of the hairspring, and with some tweaking, completely eradicated the positional error and getting a near perfect straight line in all major positions on the timing machine.

...is a 19th century secretaire which is the perfect height, when using a low chair, for watch work. With a high stool it's perfect when I'm using my microscope (an old Olympus I picked up on the 'bay). I always like seeing other peoples' benches so I thought I'd share mine. I'm currently working on an omega 1020 movement - the cannon pinion is a real pig...

That Esembl-O-Graph link is is actually only 1 of a set of 28 volumes of which 2 are general to most chrono movements dealing with adjustments and repairs, and each of the remaining 26 is a detailed, blow by blow strip down of the chrono works of specific movements (including the Pierce 134). They even include a description of the function of each part, and oiling requirements. I bought a CD a while ago with all 28 volumes on it and find it an excellent resource, I would say that if you are into vintage chronographs then it's a must have. Search eBay for Esembl-O-Graph and you should be able to get it for less than £20.

Before I had a dedicated area, I knocked this up, maybe useful to you, when I started off I needed a temporary space that would go away neatly.http://watchinprogress.com/diy-table-top-homemade-watchmaker-bench/

Found this on the net ESEMBL-O-GRAPF Illustrated text book. Could be useful as a reference Chronograph.pdf

As I only have two books that delve into the mysteries of chronographs, So I can't give a definitive best. The best book that I have is 'Complicated Watches and their repair" by Donald de Carle F.B.H.I. This is an excellent book covering a whole array of complications from automatics to moon phase triple dates. The other book only touches on them briefly and that is "Mechanical and Quartz Watch Repair" by Mick Watters F.B.H.I.

At the neatness and tidiness, I fall and genuflect... I'm incapable of being uncluttered.

Some pics of my converted ikea bench, bit different now

My not so busy launch pad.................

I did a few (three) take out's and put back's just for fun on a scrap ETA2842 (from an automatic swatch). My big mistake was that when trying to rotate the regulating pins, I did it the other way and obviously I bent the spring :) But then I got to straighten it and make it work (and now I get to tell the story) - I mean I made it work, not made it work perfectly ;) Anyway, my way of putting back the stud into that "fork" was: put it into position, with your left hand hold the movement holder (with the movement in it) and with the right hand use the back of a pair of tweezers (or other big, inelastic weight) to push it into the fork. Don't do it with the tip of the tweezers because it's somehow elastic and if it slips, you will break it again. You need controlled force. So rest you hand on the table and control your movement. I did it this way. I hope you understand what I'm trying to say and also I hope it works for you too. My advice, try to fix what you broke, from my point of view it's a treat. You work marvels when you have nothing to lose. Use superglue or shellac, if you have, to put the stud back if it fell out the first time. Try to straighten the spring, watch Mark's wonderful videos on that. Sweat a little on that hairspring. At the end it will be very rewarding, even if it doesn't work, next time you will get closer. If this is a hobby, this is the only way to learn.

I don't smoke but....

Thank you Bob! I think your right! Have an idea to get ride of the previous owners scratches