Classification Information
Adapter plugs; Apertometers; Binoculars; Directional compasses; Magnifying glasses; Marine compasses; Marking buoys; Micrometer screws; Optical condensers; Optical lenses; Power switches; Pressure indicators; Pyrometers; Refractometers; Sirens; Slope indicators; Sound alarms; Spectrograph apparatus; Surveyors' levels; Telescopic sights; Telescopic sights for artillery; Thread counters; Vehicle breakdown warning triangles; Lenses for astrophotography; Levelling rods
Electrical and Scientific Apparatus