WEBASTM. DIN ISO SAE 45° -15°, 15°, 25°, 45°, 75°, 110° 25°az90, 25°az-90, 60°az125.3, 60°az-125.3 15° -15°, 15°. ±0.15° Fiber Optic pick up coupled with DRS technology Approx. 12mm (.5 inch) Gas filled tungsten lamp 750,000 measurements typical 400nm – 700nm 10nm (31 measured points) 0 - 400%.