Waltham branded dial--no markings on automatic wind movement
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By Neverenoughwatches · Posted
The width is otherwise known as mainspring height and strength as thickness for us more modern guys. -
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. -
Learned a new thing today! 🤓 Looked this up and found this informative document: Watkins-MainspringGauges.pdf -
By Neverenoughwatches · Posted
Correct one dip is expensive when the chemical is purchased as " one dip " which is why it is mostly reserved for these two small parts as far as information tells us it is mostly tetrachloroethylene. I use it bought as perchloroethyl used in dry cleaning processes, i cant say I'm overimpressed with it though it appears to me to be shellac safe. What may be a better solution for hairsprings is a high lab grade of pure benzine. IPA is mostly used as a rinse and water displacer and yes it does have the potential to dissolve shellac, personally i would not buy anything that has significant water dilution so 99.9% IPA is the way to go. And lastly the part you are cleaning dictates your choice of cleaning brush, delicate parts like a hairspring requires the finest artist's brush you can find. Plates and bridges can take a little more scrubbing, but always check to make sure the surface is being unharmed. And dont forget a stick of tip benzine soaked correctly shaped pegwood is your mate set up for cleaning dirty jewels and removing stubborn dried up lubrication. -
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