The High Precision Grindometer NOVOTEST M-1524 has a single groove.
Grind gauges are used to determine particle size and fineness of grind. The tested materials are paints, chocolates, inks, coating materials and so on.
The device is made of hardened stainless steel. The scale on the top of the device is graduated in micrometers.
 
STANDARDS:
ASTM D 1210, AS/NZS 1580.204.1, DIN 53203, EN 21524, FTMS 141 4411.1, ISO 1524, JIS K 5600-2-5, NF T30-046
 
The instrument is available in four versions with different measurement ranges:
0-25 µm
0-50 µm
0-100 µm
0-150  µm