Armorlite™ - Trifocal 8x35 (Standard Index 1.498) 75mm Diameter Lens Blank Segment Displacement: 4mm in, 2mm down Adds are in 0.25 diopter steps from 2.00 to 4.00 for 1.50 and 3.00 bases and 1.50 to 4.00 for all others. Intermediate range is 50%

Nominal Curve	True Curve	Radius (mm)	SAG at 50	Nominal Concave	Edge Thickness	Center Thickness
1.50	1.51	350.993	0.89	6.00	18.0	12.5
3.00	3.04	174.342	1.80	6.00	12.5	8.8
4.50	4.56	116.228	2.72	6.00	12.5	10.7
6.25	6.31	83.994	3.81	6.00	8.0	8.4
8.25	8.35	63.473	5.13	6.00	8.0	11.3