Giffin Large Lid Master Caliper: Capacity To 20"
Giffin Large Lid Master Caliper: Accommodates larger pots up to 20 inches. For greenware or fired pots!Make one measurement and you have it's opposite immediately, it's an easy to use accurate way to size lids for pots.
You can also make a lid for an already fired pot, by reassemble the wing nut and screw in the 12-1/2% hole. This way your lid will shrink to fit the pot.
10 YEAR FREE REPLACEMENT OF PARTS THAT WEAR OUT IN NORMAL STUDIO USE.