Instrumentation Engineers which measures % oxygen in a sample gas. It has a three digit display, 12 mm high and with 0.1 % steps. Sample gases are easily educated by the inbuilt pump. Rechargeable Ni/Cd batteries power the instrument. The instrument is supplied with a filter tube, a separate probe and battery-charger. It has a wide variety of applications. Specifications: Type – Gas Analyzer 12 mm high and with 0.1 % steps Rechargeable Ni/Cd batteries