VEI Systems 1800 deg-F Digital EGT/Pyrometer/Exhaust-Gas Temperature Gauge (Orange/Silver) NOTE: currently backordered. Please note significantly longer lead time. Integrated controller compensates, linearizes and amplifies the probe signal for higher accuracy. Includes temperature probe with active controller and 1/8-NPT compression fitting. 2-1/16" (52mm) mounting size. Adjustable day and night brightness