85071, 85071-12 Honeywell hour meter (formerly Hobbs). 85000 series. With its highly reliable drive mechanism, the Honeywell 85000 Series features an odometer gear train and accurate quartz crystal timing to provide enhanced performance. UL/CSA recognized, with a variety of mounting styles. An improved odometer gear train, plus snap-together chassis, fits into a shock-proof, totally sealed case often resistant to many acids and solvents. All parts are in-process inspected. Every meter must pass a 100% function, burn-in, and timing accuracy test before shipping. Totally sealed. Same as 85071-12, 085071, 85071 12 and 085071 12 meters. See pdf attached here. Formerly known as 085071-12.