CASE: Modern V-shape design, high pressure die cast aluminum, finished in black textured enamel. Heavy glass protected front firmly secured against rattles by spring action.
STEM: For 31/2″ stems only and ranges up to and including 300°F, the stem material is a precision die cast Zamac alloy. For ranges above 300°F, bulb chamber is a precision machined aluminum alloy with copperplated steel stem extension. For Separable Socket connections only.
LOCKING DEVICE: Two adjusting screws provide a full 360° positioning of thermometer case and stem.
ADJUSTABLE JOINT: Die cast aluminum finished to match case. Completely encloses capillary to prevent tampering and foreign matter from entering instrument.
TUBE & CAPILLARY: Blue liquid filled-magnifying lens “Blue Reading” tube. Precision made to guarantee accuracy within 1% of scale range. Silicone shock mounted for lasting durability.
SCALE: White coated aluminum with permanently baked bold black markings. Locked in place and adjusted through device at top of scale. There are no mounting screws to cover up scale markings.
FEDERAL SPEC. Units are in full conformance with Federal Specification GG-T-321D.
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