9 Measuring and inspecting equipment, namely, calibration tools in the nature of machine calibrators, gage blocks, spacers, layout and setup tools, parallels, and setting rings; layout tools, namely, angle blocks, edge and center finders, gaging tools, sine bars, straightedges, tool setters, and tool presetters; machine setup tools, namely, setup blocks; counters, namely, time clocks, and timers; dimensional measuring tools, namely, bench centers, surface plate centers, calipers, caliper gages, coordinate measuring machine tools, depth gages, drop and test indicators, gage heads and comparators, height gages, inside diameter measurement gages, liner and distance measuring tools, machinist calipers, and micrometer tools; inspecting instruments, namely, go/no-go gages, optical inspection equipment in the nature of borescopes, microscopes, inspection surface plates, and inspection lights for the purposes of safety, namely, beacon lights, meters for measuring airflow, force, torque, hardness, moisture, and surfaces, comparators, and weighing scales; detecting instruments, namely, metal detectors, magnetic locators, natural gas detectors, carbon monoxide detectors, and refrigerant detectors; testing instruments, namely, airflow meters, bearing checkers, force gages, torque gages, hardness testers, durometers, liquid meters, moisture meters, optical comparators, optical flats, surface gages, and surface comparators; bubble levels, plumb bobs; liquid flow measuring instruments, namely, sight flow indicators for determining flow rate, flow switches, flowmeters, and sight glasses for inspecting and measuring fluid levels in tanks and vessels; liquid level measuring instruments, namely, closed circuit liquid level sight gauges, liquid level and temperature switches, liquid level controllers and switches, liquid level gauge glasses and components, liquid level measuring instruments, liquid level sensors and probes, liquid level switches, liquid level transmitters, oil level sight glasses for inspecting and measuring oil levels in tanks and vessels, and vented oil-level indicators and gauges; motion measuring instruments, namely, motion detectors; speed measuring instruments, namely, speed indicators; pressure measuring instruments, namely, barometers; temperature measuring instruments, namely, thermometers not for medical use; statistical process control measuring equipment, namely, temperature sensors for remote data collection, remote digital display probes, remote displays and particle counters for use in air quality analysis, statistical process control comparators, data processors, amplifiers, multiplexers, document printers, impact printers, and software for compiling and analyzing remote data; electronic measuring equipment, namely, electronic depth gauges and industrial calculators; safety equipment and supplies, namely, anti-static equipment in the nature of static electricity eliminators; electrostatic discharge equipment, namely, static electricity eliminators; facility communications equipment, namely, telephones and modems; facility security equipment, namely, closed circuit TV systems for security and surveillance, namely, cameras, switchers, monitors, microphones, and recorders; facility surveillance equipment, namely, closed circuit TV systems for security and surveillance, namely, cameras, switchers, monitors, microphones, and recorders; fire protection equipment, namely, clothing for protection against fire; gas detection equipment, namely, gas detectors for detecting the presence of gas; noise canceling headphones, sound level meters; traffic control equipment, namely, traffic lights; weather detection equipment, namely, digital weather station instruments; protective gear for welding, namely, welding curtains, welding screens, welding blankets; personal protective equipment, namely, ergonomic mouse pads, safety goggles, knee pads for workers, protective work gloves, hard hats, protective clothing especially made for use in laboratories, respiratory masks not for medical use; digital signs; identification supplies, namely, biometric identification apparatus; lockout/tagout supplies, in the nature of lockout devices for use with electrical switches; audio-visual equipment, namely, laser pointers, and projection screens; office machines and electronics, namely, fax machines; electronic control circuits for fans; electronic controls for HVAC units; thermostats; magnetic and electronic stud finders; digital readout equipment, namely, computer hardware and software used for providing digital readouts on machinery; power tool batteries, power tool battery chargers, power tool power cords; magnetic separators for scientific use; safety features of machines, namely, machine guards and machine shields