, 3 in.
250" Diameter sizes - center back connection onlyHighly sensitive bimetallic helix coil is heat-treated for stress relief, and silicone-coated to minimize pointer vibration and maximize heat transfer and response time360º groove around stem is a visual reference to show minimum immersion point.Heavy-duty, industrial thermometer featuring a weather-resistant, tamper-proof case± 1-3/4 in. and 5 in.