Scientific Instruments & Appliances commutator is an instrument to change of reverse the direction of an electric current. in dynamo used to convert the alternating current into direct current.
Scientific Instruments & Appliances computer is a technical device designed to find instantaneous solutions of huge and complex calculation based on the information already fed.
Scientific Instruments & Appliances mariner's compass is an apparatus for determining direction, graduated to indicate 33 directions. the "n" point on the dial indicates north pole and the "s" point, south pole.
Scientific Instruments & Appliances periscope is an apparatus for viewing objects lying above the eye level of the observer and whose direct vision is obstructed.
Scientific Instruments & Appliances salinometer is a type of hydrometer used to determine the concentration of salt solutions by measuring their densities.
Scientific Instruments & Appliances spectrometer is a type of spectroscope so calibrated as to make it suitable for the precise measurement of refractive indices.
Scientific Instruments & Appliances spring balance is used to measure the mass of a body. it is preferred only when quick but approximate determinations are to be carried out.
Scientific Instruments & Appliances stroboscope is an instrument used for viewing the objects moving rapidly with a periodic motion and to see them as if they were at rest.
Scientific Instruments & Appliances teleprinter is a communication medium for automatic sending, receiving and printing of telegraphic message from distant places.
Scientific Instruments & Appliances thermoscope is used for measuring the temperature change (approximately) of the substances by nothing the corresponding change in volume.
Scientific Instruments & Appliances transistor is a small device which may be used to amplify currents and perform other functions usually performed by a thermionic value.
Scientific Instruments & Appliances vernier is an adjustable scale with marking of 10 sub-divisions of one-tenth of an inch or any other suitable marking for measuring small sub-divisions of scale.