HYGROMETER WET & DRY Code 7640

Two same scaled mercury filled thermometers, fitted on the base. One of these bulbs covered with cotton sleeve dipped in water contained in plastic water bottle with reading of two thermometers and temperature table the humidity is found.
Range: 20 to 50 Deg C in 1 Deg divisions
Size: 320 mm in length approx.

A U-Shaped thermometer tube of the six pattern Magnifying lens tube have special metal indices for registering highest and lowest readings. These are reset by a small magnet.
Range -30 to 50 Deg C
Range -50 to 30 Deg C

WHIRLING HYGROMETER Code 7642

For measuring Humidity. Comprises a set of wet & dry bulb thermometers with lens front stem, engraved mounted on boxwood frame with water reservoir, handle for whirling. Complete with humidity table, in sling leather case.

METEOROLOGICAL THERMOMETERS Code 7643

 
A mercury in glass instrument with a constriction in the bore between bulb and the beginning of the scale. Thermometer is mounted on a teak wood mount with plastic scale. The bulb side is protected with Brass frame. A two key hole mounting strip of brass is provided.

Range - 35 to 55 Deg C MAX
Range - 35 to 55 Deg C MIN
Alcohol in glass with special metal index mounting details as above.
Range - 40 to 50 Deg C DRY BULB
Mercury in glass, without construction, fitted on teak wood mount with plastic scale.
Range - 35 to 55 deg C WET BULB
Mercury in Glass, without Construction, fitted on Teak wood mount with plastic scale.
Range 35 to 55 Deg C

For measuring earth's temperature at depths from surface down to 1m. It has the advantage that Readings can be taken without disturbing the thermometer. Thermometer is mercury in glass with its stem bent at 30 Deg just below the scale. The lower portion is placed vertically in the earth with bulb at the required depth.
Range - 10 to 55 Deg C
Depths available 5cm, 10cm, 15 cm, 20cm, 25 cm,30cm

STAND FOR THE ABOVE Code 7645

A metal stand made of thick gauge MS strip fixed with two clamps to hold the thermometer in position. Lower part can be inserted into the soil.

THERMOMETER SCREEN Code 7646

For use with four meteorological thermometers for their protection against Radiation and precipitation. The screen is a rectangular box made from seasoned wood. With all its 4 sides double layered and provided with hinged front door. The roof is double and the bottom consists of overlapping boards separated by an air space. All 4 thermometers can be fixed inside the screen on the frame work provided inside it. Painted white with chlorinated rubber base paint.

This is Symon type ordinary rain gauge. The outer body is made entirely of light, rigid and robust Fiber glass reinforced polyester. The collector is fitted with non-rusting gunmetal rim. Complete with rain collecting bottle and rain measuring cylinder.
Capacity available

• 100 cm sq. collecting area.
• 200 cm sq. collecting area

Campbell-stokes pattern, for the self recording of duration of Sunshine from Sunrise to Sunset of the day. This is a tropical pattern suitable for use in the latitudes 5 Deg South to 45 Deg North. Bowl made of Tin Bronze surface finished black painted and hard Lacquer, with cut glass sphere mounted concentrically in a section of the special bowl, the diameter of which is such that when the instrument is exposed to sun rays they are sharply focused on a card held in the grooves of the bowl, the focused sunray's burn a trace on the recording card which has a time scale printed on it. The length of the burn indicates the period of bright Sunshine during the day. Complete in a wooden box with the recording cards for one year.

Earthquake shock waves are recorded in the same manner as demonstrated by this model, by mounting the model to a table and vibrating it, earthquakes can be simulated and recorded. The recording pen is attached to a weight suspended from a support which moves with the vibrations while the recorder remains stationary because of its inertia.

A heavy duty wind vane compromising a balanced vane rotating through a double ball bearing axle made of s.s. All the directional arms can be detached, fitted on a heavy cast Al. Base with 1 1/2" Galvanized pipe. Epoxy painted to sustain weather hazards.
 

ANEMOMETER CUP COUNTER TYPE Code 7651

A 3 Cup wind Anemometer coupled with a mechanical counter housed in a cast Al. box giving the total wind run. Cups made of Aluminium.

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Compromising a self assembly weather screen with one wind vane and one Aneroid Barometer, a wet and dry bulb hydrometer, a maximum and minimum thermometer, housed in a thermometer screen made of seasoned wood with louvers at all 4 sides, front openable hinged with chain, painted white.
Dimensions 300 x 175 x 125mm H x W x D