The DuraChoice T3D25250 bi-metal thermometer has a 3" dial size, with a 2-1/2" stem. It features a stainless steel case with calibration dial, with 1/2" NPT connection. Measures 0 to 250 F (-20 to 120 C)
The DuraChoice T3D40250 bi-metal thermometer has a 3" dial size, with a 4" stem. It features a stainless steel case with calibration dial, with 1/2" NPT connection. Measures 0 to 250 F (-20 to 120 C)
The DuraChoice T3D90250 bi-metal thermometer has a 3" dial size, with a 9" stem. It features a stainless steel case with calibration dial, with 1/2" NPT connection. Measures 0 to 250 F (-20 to 120 C)
The DuraChoice T3D25500 bi-metal thermometer has a 3" dial size, with a 2-1/2" stem. It features a stainless steel case with calibration dial, with 1/2" NPT connection. Measures 50 to 500 F (10 to 260 C)
The DuraChoice T3D40500 bi-metal thermometer has a 3" dial size, with a 4" stem. It features a stainless steel case with calibration dial, with 1/2" NPT connection. Measures 50 to 500 F (10 to 260 C)
The DuraChoice T3D60500 bi-metal thermometer has a 3" dial size, with a 6" stem. It features a stainless steel case with calibration dial, with 1/2" NPT connection. Measures 50 to 500 F (10 to 260 C)