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old wilson 3QR motorized hardness tester- what are all these wires for?

tomjelly

Member
I've ended up with a pair of these vintage (more like prehistoric) units, with the connector shown. I was only able to find one blurry photo of some sort of electrical box that the pictured connector plugs in to, what do I have here, anyone seen one? What does the mystery electrical box that I do not have do?

IMG_20180226_140735.jpgIMG_20180322_163129.jpgIMG_20180322_163134.jpg
 

Dave G.

Member
The "mystery box" controls the application of the major load, hold time, and removal of the major load. Basically it makes the process semi-automated. Your testers will still work in manual mode.
 








 
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