GZ45720 Electronic Oil Control Gun Metered Electronic pre-set digital meter with 5 digit display for use with air operated oil pumps. Fitted with swivel at inlet threaded 1/2 NPT (F). Curved steel discharge spout with non drip. Max working pressure 1000 PSI. Measures flow in the range of 1 – 38 LPM up to a +/- 0.5% accuracy. Can be pre-set up to 99.9 litres max. dispense / totalizer volume of 99 999 litres. Dispense volume can be set in litres gallons quarts & pints. Supplied complete with 4 x AA batteries.