Actinimeter

A device that measures the intensity of radiation

Altimeter

A special type of aneroid barometer, used in measuring altitudes.

Ammeter

An instrument to measure the strength of an electric current.

Anemometer

An instrument to measure the velocity and find the direction of the wind

Aspirator

An apparatus for removing liquids from a body cavity

Atmometer

A device that measures the rate of evaporation

Audiometer

An instrument to measure difference in hearing.

Barometer

An instrument used for measuring atmospheric pressure.

Bathometer

A device that measures, the depth of water in the sea

Backmann

thermometer

A device that measures the slight change in temperature

Binocular

An optical instrument designed for magnified view of distant object by both eyes simultaneously.

Callipers

A device that measures the diameters of wire, tube or rod

Calorimeter

An instrument for measuring quantities of heat

Cathetometer

A device that measures the distance between fluid levels in vertical tubes

CAT scanner

An instrument that creates a three-dimensional image of body tissues by X-ray recordings.

Chronometer

A clock that keeps very accurate time as the one that is used to determine longitude at sea.

Clinical Thermometer

A thermometer for measuring the temperature of human body.

Clinometer

A device that measures the angle of an incline

Colorimeter

An instrument for comparing intensities of colour.

Commutator

An instrument to change or reverse the direction of an electric current. In dynamo used to convert alternating current into direct current.

Computer

A technical device designed to find instantaneous solutions of huge and complex calculations based on the information already fed.

Cryometer

A device that measures the very low temperature

Cyclometer

A device that measures the distance travelled by a wheel

Densimeter

A device that measures to density.

Dilatometer

A device that measures the volume expansion of liquid due to temperature

Dynamo

A device for converting mechanical energy into electrical energy.

Dynamometer

An instrument for measuring the electrical power.

Ecraseir

An instrument for removing tumours by tightening a wire loop

Electrometer

A device that measures the potential difference and charge

Electroscope

An instrument for detecting the presence of electric charge.

Endoscope

An instrument for examining hollow organs such as the bowel

Galvanometer

An instrument for measuring electric current.

Gaussmeter

A device that measures the magnetic flux, density

Geiger counter

A device that measures the radiation

Goniometer

A device that device that measures the angles, as of crystals

Gravimeter

A device that measures the gravitational field

Hydrometer

An instrument for measuring the relative density of liquids.

Hydrophone

An instrument for measuring sound under water.

Hygrometer

An instrument for measuring the relative humidity of the atmosphere.

Hygroscope

An instrument to show the changes in atmospheric humidity.

Hypsmeter

A device that measures the elevation of land

Lactometer

An instrument for measuring the relative density of milk.

Machmeter

A device that measures the speeds at and beyond the speed of sound

Manometer

An instrument to measure the pressure of gases.

Mariner’s Compass

An apparatus for determining direction. Graduated to indicate 32 directions. The "N" point on the dial indicates north pole and the "S" point, south pole.

Micrometer

An instrument used for accurately measuring small distances or angels.

Microscope

An instrument for magnified view of very small objects.

Optometer

An instrument that detects the refraction of eye

Otoscope

An instrument for examining the eardrum

Periscope

An apparatus for viewing objects lying above the eye level of the observer and whose direct vision is obstructed.

Photometer

An instrument for comparing the luminous intensity of the sources of light.

Piezometer

An instrument for measuring high pressure, compressibility

Planimeter

An instrument for measuring the surface area of a place figure

Plantimeter

A mechanical integrating instrument to measure area of a place surface.

Pluviometer

An instrument for measuring rainfall

Pyknometer

An instrument used to measure the density and coefficient of a liquid.

Pyrheliometer

An instrument for measuring solar radiations.

Pyrometers

Thermometers to measure high temperatures.

Quadrant

An instrument for measuring altitudes and angles in navigation and astronomy.

Quartz clock

A highly accurate clock used in astronomical observations and other precision work.

Radio Micrometer

An instrument for measuring heat radiations.

Rain Gauge

An instrument for measuring rainfall.

Refractometer

An instrument used to measure the refractive index of a substance.

Resistance Thermometer

Used for determining the electrical resistance of conductors.

Salinometer

A type of hydrometer used to determine the concentration of salt solutions by measuring their densities.

Seismograph

An instrument used for recording the intensity and origin of earthquake shocks.

Sextant

An instrument used for measurement of angular distances between two objects.

Spectroscope

An instrument used for spectrum analysis.

Spectrometer

A type of spectroscope so calibrated as to make it suitable for the precise measurement of refractive indices.

Spherometer

An instrument used for accurately measuring the curvature of spherical objects.

Spring Balance

An instrument used to measure the weight of a body. It is preferred only when quick but approximate determinations are to be carried out.

Sphygmomanometer

An apparatus for measuring blood pressure.

Spygmometer

An apparatus for measuring strength of the pulse

Stereoscope

An optical device to see two-dimensional pictures as having depth and solidity.

Stethoscope

A medical instrument for hearing and analyzing the sound of heart and lungs.

Stroboscope

An instrument used for viewing the objects moving rapidly with a periodic motion and to see them were at rest.

Tangent galvanometer

An instrument for measuring the strength of direct current.

Telemeter

An apparatus for recording physical events happening at a distance.

Teleprinter

A communication medium for automatic sending, receiving and printing of telegraphic messages from distant places

Telescope

An instrument for viewing distant objects as mangified.

Television

An instrument used for transmitting the visible moving images by means of wireless waves.

Tenaculum

An instrument for lifting and holding blood vessels.

Trephine

An instrument for removing discs of bone from the skull.

Thermometer

An instrument to measure the temperature.

Thermoscope

An instrument used for measuring the temperature changes of the substance by noting the corresponding change in volume

Thermostat

An automatic device for regulating constant temperature.

Transistor

A small device which may be used to amplify currents and perform other function usually performed by a thermionic valve.

Variometer

A device for measuring the rate of climb or descent of an aircraft.

Vernier

An adjustable scale for measuring small sub divisions of scale.

Vinometer

A device for measuring alcohol content of wine.

Viscometer

An instrument for measuring the viscosity, i.e., the property of resistance of a fluid to relative motion within itself.

Voltmeter

An instrument to measure potential difference between two points.

Xyster

A device for scraping bones.

Zymometer

An instrument for measuring degree of fermentation.