Filters for cleaning cooling air for engines; radiators cooling for motors and engines; regulators being parts of machines; compressed air pumps; hydraulic controls for motors and engines; valves being parts of machines; filters, as parts of machines and engines; bearings, as parts of machines; filter presses; filtering machines for chemical processing

Surveying machines and instruments; air quality measurement apparatus, namely, particle counters; Carbon dioxide detectors; pressure measuring apparatus; pressure gauges; electrical inductors; pressure indicators; calorimeters; flowmeters