Scientific, nautical, surveying, electric, mechanical, electromechanical and optical weighing, measuring, signalling, checking, supervision, regulating and control apparatus and instruments, namely, ammeters, voltmeters, ohmmeters, manometers, thermometers not for medical use, tachometers; apparatus and instruments for vehicles for measuring and displaying exhaust gas temperature, speed, [ torque, ] pressure, fill level, speed, cooling water temperature, [ manifold pressure, power, air qualit...