Marathon Sensors Inc.Marathon Sensors Inc. introduces the Headless Probe for atmosphere heat treating. The Headless Probe is based upon Marathon's acclaimed Carbonseer - a reliable oxygen probe used in atmosphere heat treating. The difference between the two probes lies in the thrifted composition of the Headless Probe. The design is more compact and has the flexibility of either 1.05-inch or .84-inch-diameter sheaths. The sheath is made from high-quality alloy. The Headless Probe is available in bundle quantities for larger users and OEMs.