An overview of the ODTC series oil dipstick thermocouple temperature probe and its applications. Harold G. Schaevitz Industries, The Sensor Connection USA. Find out more about our ODTC series oil dipstick thermocouple temperature probe: http://thesensorconnection.com/fluid-... Made in the United States, this Oil Dipstick Thermocouple is intended for use in Research & Development applications to measure engine fluid temperatures. This flexible probe slides down the dipstick tube into the pan or reservoir and can be custom made to any length per the user’s specification. The probe’s compression fitting is adjustable, allowing the probe tip to be set at various depths. Available as a type J, K, or T thermocouple, this probe is flexible, has an adjustable fitting allowing for various tip depth settings and is ideal for oil, water, and transmission fluid temperature measurements.