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For sale is a GCD-121-500 SCHAEVITZ PRECISION GAGE HEAD SPRING LOAD DC OPERATION. One item per bid. See this Digikey page for more information. Some of them have a round ball cap and some do not. All of them have rods that move smoothly. If you do not like this item for any reason, within 7 days of receipt, you can return it to me for a refund of your winning bid. You will have to pay shipping both ways and pack carefully.
