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External dimension of the instrument: length 130mm * width 70mm * height 28mm
Instrument weight: about 500g (without batteries)
Light hole size: 2mm
Optical density measurement range: 0.00 OD -- 6.00 OD
Measuring range of dot area rate: 0 -- 100%
Optical density resolution: 0.01 OD
Measurement accuracy: ±0.02 (0 -- 2.00 OD), ±2% (2.00 -- 6.00 OD)
Transmittance resolution: 0.0005%
Measurement accuracy of transmittance: ±1% (0% -- 50%), ±2% (50% -- 100%)
Light source: ANSI/ISO visual standard
Power supply: 4*AAA alkaline dry battery
