Compact design and solid state electronics make the CarbMate very durable. CarbMate displays the difference in vacuum between the two carburetors on a 912/914 engine on a single traverse "east-west" 9-LED display. Adjustable sensitivity and ZERO calibration knobs provide calibration before use and accurate results. 12V CarbMate with ROTAX Accessory Kit includes two six foot hoses, protective rubber jacket, and adapter set for connecting the CarbMate to the ROTAX 912/914 engines.