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Calipers
Amaco Lid Master
Amaco Lid Master
$22.84
5 out of 5 stars(3 Reviews)
Item #: 30318
Use Amaco's Lid Master to determine what size to make your lids to ensure a proper fit. One end measures the inside while the other end automatically measures the outside. Standard size has an 11-1/2" (292 mm) diameter capacity.
Derwent Scale Divider
Derwent Scale Divider
$9.56
3 out of 5 stars(21 Reviews)
Item #: 22275
Achieve accurate proportions every time with the Derwent Scale Divider. This invaluable drawing tool makes it easy to transfer measurements from real-life, photographs, and sketches to your canvas or paper. Use the tool to scale your pictures in ratios from 4:1 to 1:4.
Steel Calipers
Steel Calipers
$6.05 - $8.24
4.40000009 out of 5 stars(7 Reviews)
Item #: 30326
For accurately measuring inside or outside diameters. Lightweight steel instruments. Sizes, 8", 10", and 12".
Calipers
Pottery calipers are used to accurately measure the inside or outside of pottery vessels, which is useful for determining the exact size of a lid to be used on a pot or jar. Shop Blick for the Amaco Lid Master, a double-sided caliper that quickly and easily determines the inside diameter of a pottery piece while the other end automatically measures the outside diameter. Another popular option is the Derwent Scale Divider, a practical and portable tool for achieving accurate proportions in ratios from 4:1 to 1:4.