9 Thermostats hygrostats; telescopes, microscopes; photographic apparatus and instruments; namely, cameras; slide projectors; motion picture cameras and projectors; developing and finishing apparatus and instruments, namely, developing and glazing apparatus for photographic or motion picture prints; sound recording machines and instruments, measuring apparatus and instruments; namely, measuring instruments with graduations in standard or derived measuring units, precision measuring machines and instruments, namely, length gauges, gauge comparators interferometer, angle diving machines, calibration checking instruments, clinometers, angle gauges, screw thread measuring machines and instruments, projectors, surface roughness testers, flatness testing machines and instruments, straightness testing machines and instruments; automatic control machines and instruments, namely, temperature auto-controllers and instruments, calorie auto-controllers and instruments pressure automatic control machines and instruments, vacuum automatic control machines and instruments, fluid flow automatic control machines and instruments, liquid level automatic control machines and instruments, fluid composition automatic control machines and instruments, automatic combustion control machines and instruments, program controlling machines and instruments; material testing machines, namely, metal hardness testing machines, metal strength machines, metal compression testing machine, cement testing machines, concrete testing machines, lumber testing machines, textile testing machines, rubber testing machines plastic testing machines; surveying instruments, namely, chains and levels; astronomical measuring instruments, namely, zenith telescopes, transit instruments, astronomical spectrographs; photographic materials; namely, camera exposed films, dry plates consisting of glass plates, coated with sensitizing agents, used for photography purposes; eyeglasses, sunglasses and frames therefor, stream irons; iron stands; laboratory glassware