Table Top Densitometer Gammex 2-301 The Gammex 2-301 Table Top Densitometer allows for quick and easy density measurements on any standard size film on a full lighted surface. The Gammex 2-301 includes an LED display, pushbutton zeroing and density comparison capability. An optional RS-232 output for data transfer to most PC's and serial printers is available. View .PDF Fact Sheet