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Robinair 14777 Compact Electronic Vacuum Gauge -Compact Electronic Vacuum Gauge Robinair’s 14777 electronic vacuum gauge is just 2-1/2" x 3" in size, but accurate enough to clearly indicate when the system is free from moisture and ready for recharging. Specifically designed for use with a high vacuum pump, the 14777 measures to 10 microns. The digital display reads in ranges beginning with 20,000 microns. As the vacuum pump continues to pull down, the instrument registers in ever smaller segments – from 1000s of microns to segments of 500s to 50s. The ultimate reading is 10 microns. Clearly Shows Vacuum Level – The display is an easy-to-read LCD type with readout showing the current vacuum level. 6' Lead for Service Flexibility – A thermistor measuring vacuum level is attached to a 6' long lead that plugs into the instrument. You can hang the gauge in a location that’s convenient for you to monitor vacuum level. Because the thermistor with lead is removable from the unit, it can be easily replaced, if necessary. Mounting Magnet – Use the heavy-duty magnetic strip on the back of the unit to attach it to the A/C or refrigeration unit. You can position the 14777 where it’s easy to read the LCD. Hassle-Free Operation The 14777 is simple to use — just connect the thermistor lead to an access port on the system or off the inlet tee on the vacuum pump. Press the on/off button, then start the vacuum pump. For large systems, you can save battery life by running the pump for a few minutes, then turning the vacuum gauge on — all it takes is the push of a button. No. 14777 – Compact electronic vacuum gauge. Specifications Power Supply ................................................................One 9V battery (included) Vacuum Fitting ........................................................................................ 1/4" MFL Length of Lead ..................................................................................6 feet (8.3 m) Vacuum Rating ........................................................................................29 in./Hg Dimensions ............................................................................3" H x 2.5" W x 1" D ................................................................................(7.62 cm x 6.35 cm x 2.54 cm). Special order item only, please call customer service.