Backer Marathon offers Fixed Depth Thermocouples. We stock hundreds of different models and offer quick turnaround, usually 48 hours or less, on custom designed and manufactured units. We only use the highest grade materials and offer a variety of sheath materials for any environment or temperature range. All sensors are subject to rigid quality control procedures and a thorough inspection process. Expert engineering assistance is readily available for any order size, large or small. In addition to your sensor needs, we can engineer a complete thermal system for you. Worldwide on-site support is available through one of our many distributors or representatives.