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INSTRUMENTATION AND MEASUREMENT RELATED DEVICES, NAMELY, (A) NUCLEAR DENSITY GAUGE CALIBRATION AND VERIFICATION APPARATUS WHICH IS COMBINED WITH ANOTHER'S NUCLEAR MOISTURE DENSITY GAUGE THAT EMITS NEUTRONS AND/OR PHOTONS TO PROVIDE THE OPERATIONAL STATUS OF THE NUCLEAR MOISTURE DENSITY GAUGE AND (B) DEVICES USED IN TESTING LABORATORY EVALUATIONS OF MATERIALS PREPARED BY OTHERS FOR USE IN THE RAW MATERIALS AND CONSTRUCTION INDUSTRIES, NAMELY, APPARATUS USED TO EVALUATE AND PREPARE FOR EVALUATION COMPACTED CORE MATERIAL SPECIMENS, VACUUM APPARATUS, PREFORMED RESILIENT BAGS AND RELATED DENSITY EQUIPMENT, NAMELY, THOSE APPARATUS USED IN CONTEMPLATION OF SPECIFIC GRAVITY AND DENSITY LIQUID DISPLACEMENT MEASUREMENT TESTS; AND COMPUTER SOFTWARE FOR (A) DETERMINING THE OPERATIONAL STATUS AND/OR CALIBRATION STATUS OF NUCLEAR GAUGES (B) DETERMINING THE ACCEPTABILITY OF MATERIAL SPECIMENS TO STANDARDS ESTABLISHED BY ANOTHER INCLUDING ONE OR MORE OF THE DENSITY, SPECIFIC GRAVITY OR THE POROSITY OF COMPACTED MATERIAL SPECIMENS AND (C) OPERATING VACUUM EQUIPMENT AND DEVICES ASSOCIATED WITH SEALING COMPACTED SPECIMENS IN PREPARATION FOR LIQUID DISPLACEMENT TESTS, FOR USE WITH THE CONSTRUCTION, RAW MATERIALS AND MANUFACTURING INDUSTRIES