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BAROMETER FORTIN The Fortin Barometer was commonly used at meteorological stations to measure atmospheric pressure.Accurate measurements of the barometric height, often required in the laboratory, are made with a Fortin barometer The tube containing the mercury is protected by enclosing it in a brass tube, the upper part of which is made of glass so that the mercury surface may be seen. Readings are taken by a vernier moving over a millimetre scale of sufficient length toover the full range of variation in barometric height. The zero of the scale is at the tip of an ivory pointer fixed to the lower end of the brass tube. The mercury reservoir can be raised or lowered by a screw. Before taking a reading of the barometric height, the screw is adjusted until the help of the pointer just touches its image in the surface of the mercury. If the surface of e mercury is dusty, this adjustment can still be made with reasonable accuracy. A Fortin barometer thus measures the height of a column of mercury supported by atmospheric pressure. PVG’s  Fortin's barometer consists of a narrow glass tube of length about 90 cm. This tube is closed at one end. The tube is completely filled with mercury and kept inverted in a cistern filled with  mercury. The glass tube is protected by enclosing it in a brass tube. Complete apparatus mounted on a wooden base. Supplied without mercury.

PM-80 BAROMETER FORTIN

A standard mercury barometer with a glass tube of 6 mm. bore in
an enameled and lacquered brass case. Dual engraved silvered
scales 675 to 820 mm. Hg and 26.5 to 32.5 inches Hg, read by a
vernier to 0.1 mm. Hg and 0.005 inch Hg, enclosed in a glass
cylinder moves by rack and pinion through an adjustable knob; a
glass cylinder reservoir at the lower end with an ivory point to
which the level of mercury in the cistern is adjusted before taking
the reading. A ring support and three loading screws at the base for
securing the barometer in a vertical position. Supplied complete
o with a -10 to 50 C thermometer, mounted on a polished wooden
base board fitted with hanging plates. Supplied without mercury.
Overall Dimension : 1135x100x100 mm.

SKU: PM-80 BAROMETER FORTIN Category: Tags: , ,

A Fortin’s barometer is a precision Mercury Barometer used to measure atmospheric pressure in physics laboratories and meteorological studies.

Components and Salient Features

• Accurate Atmospheric Pressure Measurement :Made for precise monitoring of atmospheric pressure with a clear graduated scale that provides reliable and easy-to-read measurements for
laboratory and educational applications.

• Glass and Brass Tube: A 90 cm glass tube filled with mercury is inverted in a cistern and protected by an outer brass casing with a vertical slit to view the mercury level.

• Adjustable Cistern: The bottom of the mercury reservoir (cistern) features a flexible leather bag controlled by an adjustment screw.

• Ivory Pointer (Fiducial Point): A fixed ivory pointer inside the cistern marks the zero level of the main scale.

• Scales: Includes a main millimetre scale and a sliding vernier scale (least count typically 0.05 mm or 0.1 mm) operated via a rack and pinion arrangement.

• Durable Wooden Frame Construction i.eManufactured with a strong and polished wooden frame that provides stability, durability, and long-lasting laboratory performance.

• Easy Observation Scale whichprovides a clearly visible measurement scale for easy convenient reading and improved experimental accuracy during atmospheric pressure studies.

• For Laboratory & Educational Use i.e Ideal for physics experiments, meteorological observations, scientific demonstrations, and academic laboratory activities in schools, colleges,
and research centres.

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