8" starrett i.d. machinist layout spring caliper more

What is for sale: 8" starrett i.d. machinist layout spring caliper more

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One layout caliper. Made by Starrett in the USA. 8" spring calipers. Used for Inside Diameter measurement in layout work. These are in good condition. There is some very minor surface rust, but most of the discoloration is a cosmoline type protectant.