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Make one measurement and you have its opposite immediately. The Lid Master™ does the work of two calipers with far greater speed and accuracy!
The secondary hole accommodates for 12.5% shrinkage factor and instantly shows how much a pot will shrink during firing. This allows for sizing finished work precisely or to make lids for already fired pots (no need for a conversion ruler).
Make one measurement and you have its opposite immediately. The Lid Master™ does the work of two calipers with far greater speed and accuracy!
The secondary hole accommodates for 12.5% shrinkage factor and instantly shows how much a pot will shrink during firing. This allows for sizing finished work precisely or to make lids for already fired pots (no need for a conversion ruler).