Overview Reviews Product Description Bimetallic Thermometer: NSN # 6685-00-782-5234. Stem Length: 4, Range in F: 20/240 degrees, Form: Bottom. Government issue made bye Rhythm Industries. Comes with Instructions in box. New. Product Videos Custom Field Product Reviews (No reviews yet) Write a Review Write a Review × Bimetallic Thermometer Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name *Email *Review Subject *Comments