Specifications
Grooving Positions	Three available: center, front curve, rear curve.  Depth and location easily adjustable
Acceptable lenses	Glass, polycarbonate, plastic, CR39
Lens thickness	1.5 - 11mm
Lens diameter	28-70mm
Groove width	.65mm
Groove depth	0-.7mm
Dimensions	270 mm (L) x 210 mm (W) x 150 mm (H)
Weight	2.7 Kgs