Hsin Tools Professional Pottery Measuring Tool 2 piece set - small

© Patent pending 
200mmx12mm, Small size, measure up to 180mm (7 Inches) wide and 180mm (7 inches) deep.
A set of 2 pcs, 1 vertical plus 1 horizontal ruler (Bottom thickness and Tombo) Stainless Steel Pottery Measuring Tools by Master Potter HsinChuen Lin 林新春

This tool was designed for more precise measurements while trimming and throwing sets of pots.
1. Get an exact measurement of the bottom thickness before trimming, and while trimming, constantly checking how much clay can be removed from the base so that it won't go though or been left too thick.
2. A clever update of the classic Tombo sticks. By adding o-rings to the rulers, people can hold the tools in positions to get more accurate measurements when make sets of cups/bowls.