Vertical sidearm has a take-off tube sealed on at an angle of 75-degrees to the lower portion of the main tube. The top of the main tube has a standard taper or socket joint the same size as both the bottom inner or ball joint and the joint at the end of the 75-degree take-off tube. The top of the vertical sidearm is fitted with an outer joint (10/30) for a thermometer with a 3" (76mm) immersion. The inner or ball joint at the bottom of the main tube and at the end of the 75-degree tube are of the same size, unless otherwise requested.