The oven can accept an 18’ long heated probe with 2" diameter sheath. The probe uses a replaceable 3/8" stainless steel liner. The oven features a lightweight construction, with a rugged strip heater, 1/2" insulation, high temperature and stainless steel hardware. The probe and oven temperatures are regulated by externally accessible commercial grade infinite heat switches. Type-K thermocouple jacks are used for monitoring probe and oven temperature. A dual channel digital thermometer is recommended.