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Yes they all used to chop marks but this guy was so over the top and passionate about it that it still stands out in my memory so vividly. -
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. -
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.
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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.
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By Neverenoughwatches · Posted
The width is otherwise known as mainspring height and strength as thickness for us more modern guys.
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