Technical specifications :
Density Range: 0-4.00D
Sensor: Photo IC with 1m long Cable
Sensor Aperture:2 mm and 3 mm
Resolution: 0.01D
Accuracy: +/- 0.03D
Repeatability: +/- 0.02D
Power Supply: 3x 1.2V AAA Battery or rechargeable battery
Battery Time: 250 hours above
Size: 110 mm x 68 mm x 25 mm ( LxWxH)
Weight: 250 g with battery
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