COMMERCIAL ITEM DESCRIPTION A-A-51709
Mercury. All thermometers in which there is sufficient gas or other foreign material to cause separation of the mercury column above the constriction during shipment, test, or use, shall be classified as defective.
Markings. All markings shall be permanent and legible and shall be applied without etching, by application of a stain, enamel or other suitable material fired into the glass. The graduation marks shall be substantially straight, regularly spaced, of uniform width, and perpendicular to the axis of the stem. When tested as specified in 6.2 of ASTM E667, the markings shall not fade or discolor in such a manner as to impair their legibility. The loss of one complete graduation or numeral shall be considered a cause for rejection.
Case. A case shall be supplied with each style 1 thermometer. Case shall consist of a barrel and a cap, constructed of aluminum, nickel or chromium plated metal hard rubber or plastic, and shall contain suitable interior fittings or cushioning material to individually protect each thermometer from damage. Overall case length shall not exceed 4-7/8 inches. Case shall be free of deformity and sharp edges.
Order of precedence. In the event of a conflict between the requirements of the ASTM E667 and other requirements described herein, the requirements specified in this document shall take precedence.
Workmanship. The thermometer shall be free from defects which may detract from its appearance or impair its serviceability.
Product Quality Level.
Visual and dimensional examination. Shall be examined to verify that design, construction and workmanship are in accordance with applicable requirements.
Materials. The supplier shall be responsible for performing tests or obtaining certificates of conformance from his suppliers to assure that materials are in accordance with requirements specified.
Unit.
Type I, Style 2 and Type II, Style 2. Package (PG). One package containing six thermometers of one type only, as specified, constitutes one unit.
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