OMO Mini Engraving Block

This OMO mini engraving block is made in Italy and compares to the GRS micro block in size, measuring 3-1/8" (80mm) in diameter by 3-1/2" (89mm) in height not including the base.  When on the base the mini engraving block measures 4" (102mm). Perfect for microscope work. Jaws open to 1-1/2" (38mm). Weighs 5 lbs (2.3Kg). Base is made of aluminum. Includes a key for opening and closing jaws. Hole diameters are 4mm.  A ring fixture attachment set is available separately.