STANDARD THERMOMETER 3010
The Standard Mercury Thermometer is 10.5 inches long and is mounted on a stainless steel back. Stainless steel support, to mount the thermometer, at the proper distance from a wall. Ranges:
(a) –40°C to +55°C.
(b) –40°F to 130°F
Accuracy: ±0.15°F above 32ºF.

SOIL THERMOMETER 3011
Range 0° to 100° C with brass pipe 10 mm dia. 300 mm length. Provided with Bakelite handle and 100mm Immersion.

EARTH/SOIL THERMOMETERS (Bent Type) 3012
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, 20cm, 30cm, 50cm and 1m.

GLOBE THERMOMETER 3013
The Globe Thermometer is used in studies to determine heat stress. A 6 inch diameter hollow copper sphere is painted with a matte black paint to absorb the radiant heat from surrounding objects. After a time lag, the temperature at the center of the sphere is a measure of the radiant heat .A thermometer inserted through a rubber stopper indicates This temperature from 0ºC to 100ºC (0.5º graduations). supplied with a heavy stand and a mounting support.

MAX-MIN THERMOMETER COMBINED 3014
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:
(a) -20ºF to 120ºF
(b) -20ºC to 55ºC

MAXIMUM THERMOMETERS 3015
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 bras frame. A two key hole mounting strip of brass is provided . Range: -35ºC to 55ºC

MINIMUM THERMOMETER (Meteorological Pattern) 3016
Alcohol in glass with special metal index mounting details as above. Range: -40º to 50ºC

WET AND DRY BULB THERMOMETER COMBINED (Hygrometer)3018
Two same scaled mercury filled thermometers, fitted on the base. One of these bulbs covered with cotton sleeves dipped in water contained in plastic water bottle with reading of two thermometers and temperature table the humidity is found. Range: -10 to 55ºC

WET BULB THERMOMETER (Meteorological Pattern) 3019
Mercury in Glass, without Constriction, fitted on Teak wood mount with plastic scale. Range: 35ºC to 55ºC

DRY BULB THERMOMETER (Meteorological Pattern) 3020
Mercury in glass, without constriction, fitted on teak wood mount with plastic scale. Range: -35ºC to 55ºC

DIGITAL ELECTRONIC THERMO-HYGROMETER 3022
Table/wall mountable. Max. & Min. Memory for Temp. & Humidity.12/24 Hrs Display. Alarm Clock with Snooze Alarm (In Clock Model). Common Features: Humidity Range: 20% to 99% Temp. Range: -10ºC. to +50ºC.& +23ºF to +122ºF. (C&F Combined)

WHIRLING PSYCHROMETER 3024
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.

FAN PSYCHROMETER 3025
For determination of dew point and relative humidity. It consists of 9.5' dry ant wet bulb thermometer mounted on a common back, a water bottle, fan, motor, and 6-volt battery. It is easier to read and provides more consistent results than a conventional sling psychrometer. Components are mounted on a wooden base. The bulb of the lower thermometer is covered with a close fitting tubular muslin wick. When a fan is turned on for a period of 2-3 minutes, water is evaporated from the wick-covered thermometer. The wet bulb and dry bulb temperatures are recorded and the humidity is determined using the chart provided. Thermometer range is -20° to120°F o r-30° to +50°C.

HUMIDITY DIAL (HAIR HYGROMETER) 3026
Humidity Dial is a precision hygrometer, featuring a sensitive and reliable Durotherm humidity element. The easy to dial ranges from 0 to 100% RH with graduation of 2% RH with graduation of 2%RH. It is enclosed in a brass case with a pre-drilled mounting flange. The case has many openings to assure sufficient air flow to the measuring element.

THERMOGRAPH 3027
The thermograph is the instrument of choice for recording ambient temperature indoors or out. An aged bimetal strip expands and contracts with changing temperature. This movement is transferred to the pen through a counterbalanced mechanical linkage. A span of 60º or 110ºF can be measured, and the span can be easily adjusted for different reasons. The instrument is constructed of corrosion- resistant materials. The bases cast aluminum , and all internal parts are stainless steel or chrome plated brass air move freely around the sensor through large slots in the case.

HYGROTHERMOGRAPH 3028
Hygrothermograph is a precious, self –contained instrument that measures and records ambient temperature and relative humidity simultaneously on a double scale chart . This instrument is ideal for measurements in laboratories, computer room or agricultural areas. The Hygrothermograph employs an aged bimetal strip which distorts with changes in the temperature. This distortion is magnified through a lever system which moves a pen arm over the upper half of the 7 –inch high chart. The response is linear .Temperature is recorded over a 60°C or 110°C span. A specially treated bundle of human hair is used to measure relative humidity over the full range of 0 to 100%.

EARTH/SOIL THERMOMETERS 3030
For measuring earths 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 30º just below the scale. The lower portion is placed vertically in the earth with bulb at the required depth. Range: -10ºC to 55ºC Depths available 5cm, 10cm, 20cm, 30cm, 50cm and 1m

STAND FOR THE ABOVE 3031
A metal stand made of thick soil thermometer gauge MS strip fixed with two clamps to hold the thermometer in position. Lower part can be inserted into the soil.

THERMOMETER SCREEN (Stevenson's) 3034
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 louvered 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. Conforms to "Globe" Specification.

SMALL INSTRUMENTS SHELTER 3035
Made of moth proofed hardwood and pointed with chlorinated rubberized paint. This small instruments shelter. Conforms to US. National Weather Service Specification and is made to hold thermographs, hygrothermograph, and other recording instruments.

LARGE INSTRUMENT SHELTER 3036
Instrument shelters protect seasons and other instruments against errors and damage due to solar radiation wind and precipitation. This large instrument shelter is built to National Weather Service standards. The enclosure is large enough to house several recording instruments, such as hygrothermographs. Thermometers and sensor probes can be mounted on a board which spans the inside of the box. The shelter is constructed of clear pine and painted with three coats of white latex paint. It has louvers on all four sides and vents in the bottom. this allows ambient conditions to exist inside, while radiation and precipitation are excluded. A double roof provides added protection against direct solar radiation. A lock and key are included for security.

WIND VANE 3051
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" Galvanised pipe. Epoxy painted to sustain weather hazards.

WIND VANE 3052
A small version of the above wind vane with all parts of s.s. Vane made of Al. and direction letters are also of cast Al. painted stove enameled.

ANEMOMETER CUP COUNTER TYPE 3055
A 3 Cup wind Anemometer coupled with a mechanical counter housed in a cast Al. box giving the total wind run. Cups made of non corrosive metal/plastic. As per meteorological Dept. Specifications.

ANEMOMETER –VANE TYPE (Electrical) 3057
100mm dia. vane is mounted in Aluminium Ring coupled with Eddy current generator motor, the output of which is directly proportional to the wind speed. The wind velocity in mtr/sec can be read on a analogue meter in a remote placed console.

ANEMOMETER 3 CUP TYPE (Electrical) 3058
A 3 Cup type Anemometer mounted on a vertical axle, coupled with Eddy current generator motor, the output of which is directly proportional to the wind speed. The wind velocity in mtr/sec can be read on a analogue meter in a remote placed console.

ANEMOMETER 3060
Large 3-cup type Electrical Met pattern, with remote analogue indicator measuring range 2 to 5 mts./sec. Large rugged professional model.

ANEMOMETER 3061
Large 3-cup type digital Met pattern, with remote digital indicator measuring range 2 to 5 mts./sec. Large rugged professional model.

ELECTRICAL WIND VELOCITY/DIRECTIONAL INDICATOR 3062
Remote mounting type. A complete instrument with remote mounting facility to show the wind velocity and wind direction on a display unit which can be kept in a separate hut 30m remote cable. With or without mounting structure.

ANEMOMETER DIGITAL (Hand Held) 3071
A low friction rotating vane anemometer and its rotation is sensed by an infrared light beam which adds no friction. The resulting signal is processed by microprocessor assures maximum possible accuracy and provides special functions and features using RTC chip & Memory having small package. A special 16X2 digit Alphanumeric intelligent display is used for extra resolution and provides excellent viewing contrast in bright sunlight with back light. Suitable for most general measurements in heating, ventilating and air conditioning applications. Direct reading of air velocity-no separate timer required. Supplied in carrying case. Powered by 9V PP3 battery. Direct reading in meter/second. Very simple and convenient to use one hand operation. Alphanumeric display with RTC clock with battery backup. 100 Data with data-time Store function. IP65 Rating High Impact ABS bodied for durability. Maximum & average functions. User selectable Averaging time.
Specifications:
Sensor: Low friction rotating vane.
Memory: up to 100 readings with data-time.
Display update: 1 second
Average Time: User selectable (up to 120 seconds)
Resolution: 0.01 m/s
Range: 0.2 to 40 m/s
Threshold: 0.2 m/s
Operating Temperature: 0ºC to +60ºC
Operating Humidity: Max. 80% RH
Date-time function: battery backed digital RTC chip
Battery: V PP3 battery, 3V lithium coin cell (CR2032)

ELECTRICAL ANEMOVANE 3064
Vitality low cost accurate wind speed & direction measuring system, designed to meet most wind monitoring needs. The Essco 3064 wind speed & Direction Sensors with cross-arm. 50 feet cable and a dual channel remote indicator or Dual channel recorder.
Specification:
Power: 12Vdc@15mA (220 Vac 50/60 Hz)
Measurement Range: 0-50, 0-100 km.
Voltage Output: 0-1 or 0.5 Vdc full scale
Indicator: Wind Velocity-on Analogue Meter
Wind Direction: 0 to 360° or Analogue Meter
Option: Wind direction can also be indicated through 8 LED diodes, 4 indicating main N S E W and another 4 intermediary directions.

WEATHER STATION (Simple Form) 3075
Compromising a self assembly weather screen with one wind vane and one Anemometer, 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 200x175x125mm HxWxD. The above list does not include the entire range of instruments available, please feel free to request other items throughout this field.

LUX METER 3105
Foot candles/Lux Meter accurately displays the light level in terms of Foot candles (Fc) or Lux. Measuring ranges:
Foot candle : a. 0-200, b. 0-2000 and c. 0-5000 with resolution to 0.1
Lux : a. 0-2000, b. 0-20000 and c. 0-50000 with resolution to 1.0

SUNSHINE RECORDER 3110
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 5º South to 45º North. Bowl made of Tin Bronze surface finished black painted and hard Lacquer, with cut glass sphere mounted concentrically in a section of the spherical 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 recording cards for one year.

PYRANMOMETER (Thermo-Electrical) 3114
The pyranmometer is used to measure total (beam plus diffuse) solar radiation. The precision spectral pyranometer being used has a black thermopile sensor protected by two concentric hemispherical optically ground covers. The detector is independent of wavelength of radiation over the solar energy spectrum

PYRANOMETER SILICON CELL 3115
Silicon Cell Pyranometer measures global solar radiation. This pyranometer is low cost, lightweight, and easy to install. Pyranometer except it, includes a mounting and leveling plate. The sensor is a silicon photovoltaic cell which absorbs radiation from 0.35 to 1.15 microns. The silicon cell converts this light energy directly into electrical energy, and the output voltage (approximately 70µV/w/m2) is essentially linear with light intensity. Full-scale response time is less than 1 millisecond due to the fact that the instruments is light sensitive, not heat sensitive like thermopile pyranometer. If the output is integrated over a daily period, the accuracy of the value is within ±3%. Accuracy of instantaneous values is ±5%. temperature compensation is provided from 4°C to 60°C.

ACTINOGRAPH (Mechanical) 3122
Is used to provide a continuous record of the intensity of the Sun & Sky Radiation. Two Black Bi-metallic strips & two white strips are attached to a common coupling. The white Bi-metallic strips reflect the radiation from the sun, black bi-metallic strips absorb it. So the temperature of the black Bi-metallic strips rise & they bend. The intensity & solar Radiation from the difference of this deflection on each Bi-metallic strip. The glass hemisphere which covers the Bi-metallic sensors will transmit about 90° of the wave length of electromagnetic energy between 0-3C and 2.0 microns. the instruments is complete self contained and requires no external Power.
Specification:
Sensor: Black & white Bi-metallic strips 2 each.
Full Scale: Approx 2 cal/cm2 mm.
Chost: Effective width 50mm
Drum Rotation: 24 hours.
Dimension: 330 x 200 x 287mm approx.

RAIN GAUGE 3151
This is symon type ordinary rain gauge. The outer body is made entirely of light, right and robust Fiber glass reinforced polyester. The collector is fitted with non-rusting gunmetal rim. Complete with rain collecting bottle and rain measuring cylinder. Cap:
(a) 100cm sq. collecting area.
(b) 200 cm sq. collecting area.

RAIN RECORDER AUTOMATIC 3153
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. Cap:
(a) 100 cm sq. collecting area.
(b) 200 cm sq. collecting area.

RAINFALL SENSOR 3156
Sensor: Tipping-bucket of brass
Orifice: 200mm
Output: 0.5mm amount of rainfall per tip
Switch: Read switch (contract time 0.1 second)
Contract rating: 1 ADC max., 250Volt DC max.
Accuracy: Within 2% (100mm/hr.)
Size: Height 450mm X Dia 200mm
Weight: 3.5 kg

SEISMOGRAPH MODEL 3165
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.

BAROMETER, ANEROID 3170
With 100mm dial graduated 28 to 31 inch of mercury and 960 to 1060 millibars. With plated bezel, cover glass and index plastic approx. 16cm diameter.

BAROMETER, ANEROID DEMONSTRATION 3171
Instruments construction of this Barometer is like Cat No 3170 but enclosed in a transparent synthetic case for demonstration purpose. Air tight sealed all round, a pressure bulb is provided to force the movements for educative demonstration.

MERCURIAL BAROMETER (FORTIN TYPE). 3174
The Fortin Type Barometer consists of a long glass tube sealed at one end and filled with mercury. The tube is inverted so that the open end is submerged in a cistern of mercury. The height of the mercury in a tube is a mercury of the atmospheric pressure acting on the mercury in the cistern. Reading are taken by first adjusting the mercury level in the cistern to a zero point and then moving a vernier to the top of the mercury column.

MERCURY BAROMETER KEW PATTERN 3175
The Kew Type Barometer consists of a long glass tube sealed at one end and filled with mercury. The tube is inverted so that the open end is submerged in a cistern of mercury. The height of the mercury in a tube is a mercury of the atmospheric pressure acting on the mercury in the cistern. Reading are taken by first adjusting the mercury level in the cistern to a zero point and then moving a vernier to the top of the mercury column.

EVAPORATION PAN 3184
Standard Weather Service Type for evaporation measurements normally insulted on a wooden platform on the ground grassy location. Complete with stilling well, measuring cylinder & thermometer.
Optional: Hook gauge.

WATER LEVEL RECORDER, AUTOMATIC, FLOAT TYPE 3197
Normally installed in conventional stilling wells on river/stream bridges to record water level of the river/stream on a continuous strip chart driven by a spring wound clock mechanism.

Also available:
METEOROLOGICAL WEATHER STATION
With up-to 5 parameters Digital or Analogue Data Loger.

WATER CURRENT METERS
and a wide range of HYDROLOGICAL EQUIPMENTS.

SOLAR EDUCATIONAL KIT 3204
This Educational Kit make teaching of Principle and application of Solar energy. In educational field this kit is a live demonstration unit to understand very nicely by the students. While Solar Cells is exposed in sun light for 8 to 10 Hours, the Battery (Nicole Cadmium) will be charged, which is placed in cell compartment for storing the electrical energy. We can perform number of experiments with this storage energy such as:
• Electrical Energy
Connect the socket of the Battery to the other socket of meter with help of lead wire thus the meter will indicate Battery charged voltage. Thus conversion of solar energy into power storage energy
• Light Energy
By making the similar connection tube to bulb (L.E.D.) The current will be flow through bull and this will glow. Thus conversion Solar Energy into Electrical Energy.
• Sound Energy
Similar a beep sound will be heard by making suitable connection from Buzzer. Thus conversion of solar energy into sound energy.
• Electromagnet Energy
By making suitable connection with motor. The current will be flow through rotor, which turn engine. This conversion energy into electrical energy and then mechanical energy. Solar Cells Panel placed in sun light & operate any Electrical items such as Transistor into electrical Energy and then mechanical energy.

SOLAR FAN 3213
This working model is in a two parts box. The part with solar cells is placed in sunlight and fan portion is kept in shade or class room. The solar energy gets converted into electrical energy, which in turn energies the fan. Thus conversion of solar energy into electrical energy and then mechanical energy.

SOLAR BULB 3218
Working model in two parts box, one part with solar cell and other is with bulb (L.E.D.) The part with solar cell is placed in sunlight and the bulb with glow. Thus conversion of solar energy into electrical energy.

SOLAR METER 3221
Same as above, but with DC Micro-ammeter for current indication.

WINDMILL GENERATOR 3229
Designed specifically as a teaching device for the study of electricity generation by wind power. Has six fully adjustable and removable rectangular vanes, permitting various configurations and surface area calculations. The DC electricity generator is equipped with connection terminals for multi amp/voltmeter (not included). Also has varied intensity 1.5-V indicator lamp. Includes manual and instructions.

WIND MILL 3233
As in other models, this is again in two parts wooden case. First remove the lid from the bottom of the fan and then expose it to a little bit fast wind (may be exposed to a ceiling/table fan in the class room) The air strikes the generator blades, which starts rotating and electricity is produced which is indicated by a bulb (L.E.D.) and meter. Thus conversion of wind energy into electrical energy.

PRIMARY COLOURS AND COMPOSITE COLOURS 3245
Red, Blue & Green are primary colours. By mixing these two or three colours in desired ration, a complete spectrum of secondary colours and also white colour can be obtained. The unit is in two parts, the lid with sunmica, serving as a screen. Working on 12 Volts at 3 Amps.

SOLAR PUMP 3251
A micro motor driven miniature Water Pump, operated by electrical energy produced through conversion of Solar Radiation.