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Starret 721a not working

Jordan429

Plastic
Joined
Jun 13, 2021
I recently bought two starret 721a digital calipers on an auction. Put new batteries in both nothing coming on on either. any one no why they won't turn on thanks
 
Probably a better topic for the General or Metrology sections?

If you're lucky, cleaning off corrosion from the terminals before replacing the battery might work. An ink eraser (should anyone else go back that far) sharpened to a point is one way to clean them.
 
I have a junk Starret digital depth gauge, and also 2 B&S precision carbide tipped C clamps, 1" and 2". No problem with any on my Mit calipers. I am going to guess that some time after the batteries go dead these things loose their brains. Could be many many months or longer. Non volatile memory forgets and makes it think it is a potato.
 








 
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