1" dial with 5" slim stem (0.142" Dia)-perfect for pocket, tool kit. Plastic pocket case can be used as a handle. Superior shock protection. All stainless steel external parts. Hi-visibility dial graphics. Unbreakable polycarbonate crystal. External recalibration design. Instant pointer response. Extended scale design. Range: -40/160 deg (degrees) F (Fahrenheit), deg div. 2 deg, 1 point calibration for +-1% accuracy at dial midpoint.