Automatic Girdle Marker - With Motor
 
A handy instrument for accurate marking of the girdle. The crown height is set on a built-in measuring clock, so that the accuracy of the marking is +/-0,01 mm. The stone is positioned under a holder and turned around automatically by a motor so that a perfectly straight, thin line is drawn on the girdle. It is recommended to use this device only with stones already blocked. In case of rough stone, one should better use the manual version (B2168A).