35 RETAIL MAIL ORDER, TELEPHONE ORDER, FACSIMILE ORDER, AND COMPUTERIZED ON-LINE ORDERING SERVICES FOR PRODUCTS FOR MEASURING, CONTROLLING, AND/OR REGULATING TEMPERATURE, HUMIDITY, PRESSURE, STRAIN, FORCE, FLOW, LEVEL, pH, LOAD, VIBRATION, ELECTRICAL RESISTANCE, AIR VELOCITY, AMPERAGE, FREQUENCY, VOLTAGE, ION CONCENTRATION, CONDUCTIVITY, ENVIRONMENTAL MONITORING TECHNOLOGY, AND LABORATORY PROCESS MEASUREMENT AND CONTROL DATA ACQUISITION, DISPLAY AND RETRIEVAL