Robinair 14777 Compact Electronic Thermistor Vacuum Gauge Compact, 2.5 inch x 3 inch, pocket size Electronic Thermistor Vacuum Gauge takes the guesswork out of evacuation - accurately indicates when system is ready for recharge Designed for use under high vacuum conditions and reads down to 10 microns Easy-to-read LCD automatically registers smaller numeric segments as system pulls down 6 foot long lead and magnetic mounting strip allows for convenient, easy-to-read positioning 25,000 to 10 micron range; 1/4 inch male flare vacuum fitting; runs on one 9V battery (included) Robinair 14777 Compact Electronic Thermistor Vacuum Gauge Electronic vacuum gauge is compact in size at just 2-1/2 inch x 3 inch 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 and reads down to 10 microns Special Shipping Information: This item cannot be returned and has additional shipping restrictions