Xrite 301 Densitometer
Provides highly repeatable and accurate measurements of black and white film densities. Large LED numerals can be read easily in bright or dim light.
Features
Measuring range: 0-5.0D with 2 and 3mm apertures; 0-4.0D with 1mm aperture
Scale factor (slope) stability: ±1% per 6 months
RS232 output (optional)