Optical Fibers and Lenses

Optical Instruments

Spectacle Frames and Mountings

Sunglasses and Goggles

Binoculars and Telescopes

Cameras and Accessories

Cinematographic Equipment

Photographic Laboratory Equipment

Microscopes and Accessories

Non optical Microscopes

Navigational Instruments

Surveying Instruments

Precision Balances

Drawing and Calculating Instruments

Medical Instruments

Breathing Appliances and Gas Masks

Radiological Equipment

Demonstrational Instruments and Models

Testing Machines and Appliances

Thermometers, Pyrometers, and Related Instruments

Measuring or Checking Instruments for Liquids or Gases

Analysis or Testing Instruments

Meters and Counters

Counters and Indicators

Radiation, Electrical, and Electronic Measurement Instruments

Mechanical Measurement and Testing Instruments

Automatic Regulating or Controlling Instruments