Type	Range	Length, cm
WLS-41915	Wide Range	0.70-2.00 x 0.01	40
WLS-42015	Light Dual	0.600-1.000 x 0.005, 10°-100° x 1°	30
WLS-42035-A	Heavy Dual	1.000-1.220 x 0.002, 0°-26° x 2°	30
WLS-42035-C	Heavy Dual	1.00-2.00 x 0.05, 0°-70° x 1°	30