
Manual Instruments

127mm Brass Rim Rainguage
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Made of PVC plastic/Fibre Glas with a sharp edged brass rim on the funnel.
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Comes with a removable funnel with rim diameter 127mm, 75mm collecting bucket, diameter 12.7cm, height 26.5cm and a gauge container
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1m PVC Stand/pole, C6/C9 in which the raingauge fits.
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20mm Borosilicate Rainfall Measuring Glass
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5cm diameter and 24.5cm height

127mm Copper Rainguage
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Material of body and other parts: Copper
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Precision machined Brass Septum Ring with 5” (127mm) internal dia.
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Inner can capacity : 140mm of rainfall
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Height : 490mm (Nominal)
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Diameter at base : 140mm (Nominal)

Rainfall Measuring Cylinders
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Three Options Available: 10mm, 20mm and 50mm
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Made of Borosilicate Glass
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Used for Rainfall Measuring
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Used together with the Flat Bottomed Jar for 127mm (5 inch) Raingauge
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Capacity 10mm, 20mm or 50mm
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Graduated 0.1mm or 0.2mm
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Additional divisions at : 0.05mm or 0.1mm

Cup Anemometer
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Material: Weather-resistant aluminum
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Design: Three hemispherical cups on horizontal arms rotating around a vertical axis.
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Dimensions: Cup diameter 5–10 cm; height 20–50 cm.
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Measurement: Wind speeds 0–75 m/s; ±2% accuracy.
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Mounting: Installed 1..2-2 meters above ground.

Windvane
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Material: Corrosion-resistant metals.
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Range: 0° to 360°, with sensitivity to low wind speeds (~0.5 m/s).
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Accuracy: ±1° to ±5°.
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Mounting: Mast height of 6 meters for unobstructed wind flow.
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Bearings: Low-friction for smooth rotation.

Large Stevenson Screens (Double Door)
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Material: White-painted wood with louvered panels.
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Dimensions: Standard size 60 × 60 × 60 cm
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Design: Double hinged doors, -louvered sides, slanted roof for runoff.
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Height: Mounted 1.25–2m above ground.
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Contents: Holds thermometers and hygrometers per WMO standards.
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Small Stevenson Screens (Single Door)
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Material: White-painted wood with louvered panels.
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Design: Single hinged door, louvered sides, slanted roof for runoff.
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Height: Mounted 1.25–2m above ground.
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Contents: Holds thermometers and hygrometers per WMO standards.
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Stainless Steel Class A Evaporation Pam
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Material: Low carbon stainless steel, type 304, 18 gauge
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Construction: Heliarc welded, 1/2-in. drain plug NPT female coupling Volume~291 L (~77 gal)
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Adding 29.15 L (7.7 gal) will raise water level in pan by 2.54 cm (1 in.).
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Inside Diameter :120.6 cm (47.5 in.)
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Inside Depth: 25 cm (10 in.)
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Wall Thickness: 0.119 cm (0.047 in.)
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Weight: 22 kg (48 lb)
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GI Evaporation Pam
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Material: Galvanised, type 304, 18 gauge
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Construction: Heliarc welded, 1/2-in. drain plug NPT female coupling Volume~291 L (~77 gal)
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Adding 29.15 L (7.7 gal) will raise water level in pan by 2.54 cm (1 in.).
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Inside Diameter :120.6 cm (47.5 in.)
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Inside Depth: 25 cm (10 in.)
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Wall Thickness: 0.119 cm (0.047 in.)
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Weight: 22 kg (48 lb)
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Thermohygrograph
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U-shaped bimetal
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Natural hair
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Measuring range -35 ... + 45 ° C
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Measuring range -15 ... + 65 ° C
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Measuring range -5 ... + 55 ° C
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Measurement accuracy according to DIN (± 0.5 K ± 3% RH)
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Mechanical clockwork
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Nominal circulation times 1d - 7d
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Barograph
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Aneroid barograph used for the registration of atmospheric pressure.
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Measuring range 955 to 1055 hPa
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Accuracy ± 0.7 hPa
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Diagram graduation 1 hPa.
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Mahogany colored wooden case 345 x 190 x 185mm.
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The barograph is equipped with quarz clockwork which can be shifted in an instant for daily, weekly or monthly revolution. The periods are 25.6 h / 176 h / 783h.

Campbell Stokes Sunshine Recorder
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Measuring element: A cut glass sphere, also known as a burning glass
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Sphere diameter: 101.6 mm ± 1.3 mm
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Focal length for sodium D light: 74.9 mm ± 0.25 mm
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Dimensions: 240 x 187 x 165 mm
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Weight: 4.3 kg
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Adjustment: For geographical latitudes from 0° to 65° N or S
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Bowl: Made from gunmetal with three overlapping pairs of grooves
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Slide: Mounted on a T-shaped metal base to adjust the sphere and bowl
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Cards: Sunshine hours are recorded on cards inserted into the base of the unit

Constant Level Water Bottles
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Glass type: Borosilicate glass (heat-resistant, chemical-resistant).
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Capacity: 250 milliliters.
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Graduations: May include volume marks for accurate measurement.
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Top closure: Sealed or with a glass stopper to maintain a constant water level.
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Sidearm outlet: To control the flow of liquid and maintain the constant level.
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Conical body: Provides stability and prevents tipping.
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Height: Approximately 150-200 mm.

Maximum Thermometers
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Type: alcohol-based (non-toxic alternative).
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Measurement Range: Typically -30°C to 50°C
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Length: Usually between 200 mm and 300 mm.
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Diameter: Typically, 6 mm to 10 mm.
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Tube: Made of toughened borosilicate glass for durability and resistance to thermal expansion.
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Liquid: dyed alcohol
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Resolution: Accurate to ±0.5°C for alcohol-based thermometers.
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Comply with standards like ISO 17025 or WMO (World Meteorological Organization) guidelines.

Minimum Thermometers
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Range: -35°C to 55°C.
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Material: Borosilicate glass, dyed alcohol.
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Dimensions: 250 mm length, 8 mm diameter.
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Accuracy: ±0.5°C.
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Marker Reset: Manual.
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Complies with standards such as ISO 17025 or WMO (World Meteorological Organization) guidelines.

Dry and Wet Bulb Thermometers
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Range: -35°C to 55°C.
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Material: Borosilicate glass with mercury or dyed alcohol.
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Accuracy: ±0.2°C (mercury), ±0.5°C (alcohol).
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Dimensions: 250 mm length, 8 mm diameter.
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Wick Material: Muslin.

Hygrometers
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Hygrometer : Mason’s Combined Wet & Dry Bulb Thermometers
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Hygrometer comes with a RH Table
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Hygrometer comes with a distilled water bottle
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Kept in a Stevenson Screen
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Easy to read, Celsius & Fahrenheit Scales
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Range: -20 °C to +50°C

Clinometers
Measurement Range:
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Typical: ±1° to ±90°
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Geotechnical: ±30° or ±60°.
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High-precision inclinometers: ±5° to ±15°.
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Resolution: Typical: 0.01° to 0.0001°.
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Accuracy: Difference between the measured angle and the actual angle.
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Typical: ±0.1° to ±0.001°.
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Portable Compasses
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Magnetic North
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Rotating Bezel with 2 degrees increments
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Liquid filled
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Glow in the dark features
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Dimensions 4.25 in (19.7cm x 2.5cm case
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Hard glass casing
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Water resistant

Wind socks
​Compliance Standards
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ICAO (International Civil Aviation Organization):
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For airport applications, windsocks must conform to ICAO Annex 14.
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FAA (Federal Aviation Administration): FAA Advisory Circular 150/5345-27: Specifies size, color, and wind thresholds for windsocks at airports.
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ISO Standards: ISO 17713-1 for wind tunnel testing of anemometers and windsocks