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Hello from England

PQR

By PQR
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PQR New Member

PQR

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Hello! Thanks to everyone who contributes here - I've been following and learned a lot. With a background in science and electronics, I've recently been drawn into watches and have serviced a few mechanical movements for myself. At first it was just to make the watches work, but the more I learn about the centuries of development the more I revel in the tinkering.
 

So far I've always found answers to my questions without having to ask, but I look foward to contributing a morsel someday.

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    • RichardHarris123
      Obscure units of measurement

      By RichardHarris123 · Posted

      On a different post we were discussing units of measurements. Not wanting to highjack the post, I  thought we could discuss here.  What is the origin of Dennison's. @Waggyonly one lecturer insisting on units of measurement, all mine did.  
    • Waggy
      Pivot Gauge

      By Waggy · Posted

      I used to have a lecturer during my Engineering classes who was always beating a drum about quoting units, I remember one day he was so exasperated with our class he said "quote your units!!!!...I don't care what units JUST QUOTE THEM!!!" My next assignment I calculated the velocity and quoted the units, something along the lines of: "Thus the velocity of the body will be 0.00345 furlongs per fortnight" He graded my work as an F, then crossed it out and gave me an A+, turns out he had a sense of humor after all.
    • Waggy
      Cleaning solution clarification

      By Waggy · Posted

      Just to add to what @Neverenoughwatches says, the impulse jewel on the balance wheel is also held in by shellac, so avoid exposing the assembly to IPA as well - as stated the one-dip and generic tetrachloroethylene equivalent is safe with shellac so you can use this for your pallet fork and balance assembly. I agree, but worth noting that IPA readily soaks up water, even from the atmosphere: "IPA exposed to the air will absorb moisture rapidly until it reaches an equilibrium value of 65% IPA to 35% water." So you need to refresh it regularly.     
    • Neverenoughwatches
      Pivot Gauge

      By Neverenoughwatches · Posted

      The width is otherwise known as mainspring height and strength as thickness for us more modern guys.
    • RichardHarris123
      Pivot Gauge

      By RichardHarris123 · Posted

      I've remembered something I had forgotten.  I've come across Dennison before but forgot all about it as I'm never going to use the units.  Maybe we should start a  thread on obscure units of measurement. 
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