This Gauge can be used for all the stones size measurement. It can calculate the size of small gemstone or diamond accurately up to 0.1mm and the maximum capacity is 20 mm.
Johari Dial Gauge 20mm (Eco.) is a pocket-size millimeter guage made to measure the size of the small gemstones or diamonds of size up to 20mm.
|Measuring Range||0.1mm - 20mm|
|Dimension and weight|