Measurement apparatus and equipment for scientific, nautical, topographic, meteorologic, industrial and laboratory purposes, namely, thermometers, barometers, ammeters, voltmeters, hygrometers, semiconductor testing apparatus, telescopes, periscopes, directional compasses, speed indicators, microscopes, magnifying glasses, stills, binoculars, ovens and furnaces for laboratory experiments; apparatus for recording, transmission or reproduction of sound or images, cameras, photographic cameras, ...