Available in straight (bottom) connection or angle (back) connection, Merit's TDG Series thermometers are annodized in a gold color on an aluminum case for a lasting finish. Standard case lengths are 4.5", 6" or 8" with standard stem lengths available in 2.5", 4" or 6" in brass with a brass swivel nut. Standard ranges are -40/110 F&C, 20/180 F&C, 30/240 F&C 30/300 F&C and 50/400 F&C with red or blue colored organic (kerosene) liquid in glass. Other ranges, case and stem lengths are available upon request.