SPECIFICATIONS CASE & RING - drawn stainless steel case with snap-in "O" ring gasketed clear lexan or glass window. DIAL - white coated aluminum with black markings. POINTER - slotted adjustable type which permits "zero set" calibration. BOURDON TUBE - precision geared brass movement and phosphor bronze tube. THERMAL SYSTEMS - available in nine standard types, with system lengths from 6 inches thru 100 feet. Materials for the case and ring assembly are as shown in the Coding Charts. PROCESS CONN. FITTING - separable socket, union or air duct flange connections. ACCURACY - one scale division throughout range. Built with NSF accuracy and compliance, see our complete listing at www.nsf.org.

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