A bi-metal weldless thermometer with 3" stainless steel housing, hermetically sealed in a water proof case with glass face. Ideal for fitting to your mash tun, hot liquor tank or kettle. Full kit for weldless install. The thermometer kit include 1 x stainless washer, 1 x 1/2"NPT/BSP Lock Nut, 2 x Silicone O-rings. Requires a 7/8" drill bit to install. To prevent leaking, wrap the 1/2" BSP threads with Teflon tape prior to threading into the port.