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All, This is my first post to the group...hopefully the first of many. I wanted to let this community know that I've finally completed my project to digitize K&D's 163 page reference book from 1910 titled "Staking Tools and How To Use Them". This is the complete original book, including the tool catalog information that was omitted from previous reprints. High resolutions scans in color and b&w are available at: http://kanddinverto.weebly.com/staking-tools-and-how-to-use-them.html For those who just want a pdf of the complete book, I've posted it on my DropBox site at: https://www.dropbox.com/s/py5i68llm1e4ghn/StakingToolsAndHowToUseThem1910-163Pages.pdf?dl=0 Fair warning: the pdf is over 330MB so it'll take a while to download. I'm making this available in the spirit of, and appreciation for, Mark's work on his YouTube channel. While I've only been a lurker here in the past, I'm a subscriber and regular viewer of his excellent tutorials. And on that subject, the latest series has me thinking "Please save me from ever being called upon to work on a Breitling chronograph..."! Just keeping track of the names of the components is daunting enough. Enjoy! Tom

The First is a 7009-8129 . Looks good in person and has a comfortable Beads of Rice bracelet in great shape... The Second is a Seiko Silverwave Z quartz.....on its way...

All, The latest update to kanddinverto.weebly.com is a combined list of all stake and stump information: descriptions, numbers, and dimensions. This information changed here and there over the years, making it more difficult to identify the tools. Hopefully this single, integrated list will help reduce confusion. Both the native Excel sheet and a link to a Google Sheet are available. As always, any reports of errors found will be greatly appreciated. Tom

I finally got up-to-date on Watch-O-Scope. This may be my salvation as I am awaiting delivery of a Greiner microphone. Many thanks to Geo, Rob and Stefan.

My latest acquisition. It seems to be working great. Now I have to order some cleaning a rinsing fluid. However, the star baffles were missing and the gentlemen is going to look for them. He isn't sure where they went. I'm searching on the bay. Any other ideas? Could I fashion some out of something? If so, does anyone have the dimensions? As always, thank you for your valuable time! Gary

Witschi has technical explanations of how the values are calculated. The amplitude is calculated from the noise of the escape-wheel tooth meeting the locking plane of the pallet-stone and the lever hitting the banking-pin. "To calculate the amplitude, the time between the first pulse and the third pulse of the beat noise is measured. Between these two pulses, the balance wheel rotates a certain angle. This so-called lift angle is determined by the construction of the movement and is entered as a parameter. The larger the amplitude of the balance wheel, the greater is the speed with which it goes through these lift angle and the shorter is the time it needs to traverse this angle. The amplitude can therefore be calculated from the time between the first and the third pulses in the beat noise, taking into account the beat number and the lift angle."

Hi Mark, I think you have the answer. Two neutrals will allow independent operation of two items but only one live is needed as it loops across. So it will be Line ( live ) Black. Neutral Grey. Second Neutral Blue. And Ground ( Earth ) Red. I can check this with a meter so no risk of blowing it ( and myself ) up. Thanks to all of you for your help. Mike

Congratulations in taking the step to become a qualified watchmaker. When I decided to make take up an apprenticeship it took me 5 years and then another 2 years as an improver. Here in the UK the money isn't too good to start with but when you have qualified you start to reap the benefits and they are good, even better if you work for yourself. During your apprenticeship you will have the very best in equipment to use, regarding tools I expect you already know buy the best you can afford and they will last you a lifetime. Are you just going into watches or are you intending to undertake clocks as well. Do keep in touch and keep us up to date on your progress.

By the look of the watch case more then one person has had fun getting the back off. Has someone had a go with hammer and chisel.