Giffin Tec - Large Lidmaster

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Outside/inside measuring calipers for potters. Measure the inner dimension of a vessel’s opening and the Lid Master automatically produces the outer dimension needed for a lid. Eas y to read indicators show precisely how many inches the lid will need to be and a second pivot location produces a 12.5% ratio that’s similar to the shrinkage rate of fired clay. Measures from 0-16.5 inches Show more