Current sources, namely, current generators | Quantum hall systems consisting primarily of superconducting magnets, printed circuit boards (PCB) for generating quantum effects, room temperature resistance bridges, and hardware or magnet cooling dewars; current range extenders, namely, DC current sources in the nature of capacitors from 150 mA to 10,000 A and current comparator designed for higher currents and current sources, namely, DC current sources in the nature of capacitors from 150 mA to 10,000 A; current transformers; voltage dividers; null detectors, namely, devices for measuring, DC voltage sources ranging from micro-volts to thousands of volts; power analyzers; teraohmmeters; scanners; salinometers
Electrical measuring instruments and standards and parts thereof, namely, resistance bridges and current range extenders for measuring resistance, temperature bridges, teraohmmeters, precision current transformers, impedance measurement systems comprised of phase sensitive detectors, current comparators, and AC bridges; high voltage capacitance bridges, thermometers, AC-DC transfer standards, transconduct amplifiers, watt meters, volt meters, potentiometers, ohmmeters, inductive dividers for calibrating resistance or voltage ratios; resistance standards for use as reference standards with resistance bridges, temperature bridges, and digital multi-meters or for verifying the performance of the aforementioned equipment; temperature stabilized standards with their own built-in temperature controller used as reference standards and artifacts to verify measurement performance of precision metrology lab equipment, namely, resistance bridges, temperature bridges, thermometers, and digital multi-meters; air standards used as reference standards and artifacts to verify measurement performance of precision metrology lab equipment, namely, resistance bridges, temperature bridges, thermometers, and digital multi-meters; oil standards used in oil temperature baths as reference standards and artifacts to verify measurement performance of precision metrology lab equipment, namely, resistance bridges, temperature bridges, thermometers, and digital multi-meters; current shunts, voltage standards; oceanography instruments, namely, salinometers and constant temperature baths for fluid and air; calibration
precision electrical instruments, oceanographic scientific measuring, testing and analytical instruments, probes, sensors, and recording devices, all to be carried through bodies of water to measure and record chemical, biological, and physical conditions of the water, namely, temperature, conductivity, resistance, salinity, acidity, pressure, chemical concentrations, and biological concentrations
ELECTRICAL MEASURING INSTRUMENTS AND STANDARDS AND PARTS THEREOF-NAMELY, [ POTENTIOMETERS;] BRIDGES FOR MEASUREMENT OF RESISTANCE, CAPACITANCE, INDUCTANCE TEMPERATURE; [ GALVANOMETERS; PHOTOCELL GALVANOMETER AMPLIFIERS; ] STANDARDS OF VOLTAGE AND RESISTANCE, FOR STANDARDS LABORATORIES; CONSTANT TEMPERATURE OIL BATHS AND AIR BATHS; [ TRANSFORMER CALIBRATION EQUIPMENT; AND SPECIAL PURPOSE PRESS BUTTON AND ROTARY SWITCHES FOR USE WITH THE AFOREMENTIONED PRODUCTS]
