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💡 Scientific Instrument 👇👇

♦️ Fathometer:- Measures depth of ocean.

♦️ Fluxmeter:- Measures magnetic flux.

♦️ Galvanometer:- Measures electric current.

♦️ Hydrometer:- Measures relative density of liquids.

♦️ Hygrometer:- Measures level of humidity.

♦️ Hydrophone:- Measures sound under water.

♦️ Hypsometer:- To determine boiling point of liquids.

♦️ Hygroscope:- Shows the changes in atmospheric humidity.

♦️ Machmeter:- Determines the speed of an aircraft in terms of the speed of sound.

♦️ Manometer:- Measures the pressure of gases.

♦️ Micrometer:- Measures distances/ angles.

♦️ Nephetometer:- Measures turbidity.

♦️ Odometer:- Measure distance travelled by vehicle.

♦️ Periscope:- To view objects above sea level.

♦️ Pyrometer:- Measures very high temperature.

♦️ Refractometer:- Measures refractive indices.

🔴 Map lines 👇👇

📌 Agonic line:- The line joining the places of zero declination

📌 Aclinic line:- The line joining the places of zero dip

📌 Isogonic line:- The line joining the places of same declination.

📌 Isohypes:- The line joining the points of equal elevation or height.

📌 Isobath:- The line joining the points of equal depth of sea water.

📌 Isobar:- The line joining the points of equal atmospheric pressure.

📌 Isohaline:- The line joining the ocean regions of equal salinity.

📌 Isohel:- The line joining the points of equal period of insolation.

📌 Isohytes:- The line joining the points of equal precipitation.

📌 Isonif:- The line joining the points of equal snow

📌 Isocline:- The line of equal magnetic dip.

📌 Isophyte:- The line joining the points of equal height vegetations.

📌 Isochrone:- The line joining the points of equal time of flow

📌 Isotach:- The line in the weather maps, showing the points of equal wind velocity.

📌 Isorymes:- Lines of equal frost.

💡 Scientific Instrument 👇👇

♦️ Salinometer:- Determine salinity of solutions.

♦️ Sonar:- Used to detect objects under water.

♦️ Stereoscope:- To view two-dimensional picture.

♦️ Tachometer:- A theodolite adopted to measure distances, elevations and bearing during survey.

♦️ Udometer, Pluviometer, Ombrometer, hyetometer :- Rain gauge

♦️ Venturimeter:- To measure rate of flow of liquids.

♦️ Viscometer:- Measures viscosity of liquids.

Instrument used in surveying👇
♦️ Clinometer:- measuring angles of slopes
♦️subtence bar:- measure horizontal distance
♦️Box sextant:- measuring horizontal angle
♦️Planimeter:- measuring area on map
♦️pentagraph:- enlarging or reducing area on map
♦️line Ranger:- ranging a chain line
♦️Hand level:- Making contour & Cross section of preliminary work
♦️Ceylon ghat tracer:- Measuring angles of slopes & setting out grade contours.

♦️ The rainfall in rain gauge is measured everyday at 8:30 AM.

♦️ Raingauge are also called as pluviometer, ombrometer, hydrometer & udometer.

♦️The heighst Raingauge density - Israel

♦️All India forecasts of rainfall are prepared at New Delhi

♦️The water year in India starts from first day of June