Measurement apparatus and equipment for scientific, nautical, topographic, meteorologic, industrial and laboratory purposes, namely, thermometers, not for medical purposes, barometers, ammeters, voltmeters, hygrometers, electromechanic, run adhesion, compression, fatigue, flexure, ductility, shock, tensile, vibration, and shear testing apparatus not for medical purposes, telescopes, periscopes, directional compasses, speed indicators, laboratory apparatus being homogenizers and centrifuges, m...