Available in 2", 3", 4", 5" and 6" dial sizes, with stem lengths available from 2.5" up to 78" in length. Connections are available in center back or adjustable angle (fixed bottom, left or right side are available upon request) and 1/2" NPT or 1/2" BSP are standard. Each thermometer is hermetically sealed, has an external recalibrator screw, 304 SS construction and is available in single F only or C only ranges as well as dual scale F&C ranges. Glass lens is standard and a polycarbonate lens is an available option. Merit's bimetal thermometers come standard with an aluminum dished dial to help eliminate parallax error when reading the temperature, and highly contrasting black temperature increments and numerals.