Altimeter – Height/Altitude
Aneroid Barometer – Atmospheric pressure
Anemometer – Wind speed/velocity
Atmometer – Leaf temperature
Auxanometer – Growth of plant
Barograph – Continuous atmospheric pressure
Cambel Stokes Recorder – Sunshine duration
Crescograph – Growth of plant
Cryometer – Measuring temperature below 0ºC
Darsometer – Dew
Evaporimeter – Evapo-transpiration
Heliograph – Duration of bright sunshine hours
Hygrometer / Psychrometer – Relative humidity (RH)
Hydrometer – Relative density of liquids
Infra-red Thermometer – Canopy temperature
Infiltrometer – Infiltration
Irrometer – Water stress, soil moisture tension
Lactometer – Fat % in milk
Lysimeter – Evapo-transpiration (ET)
Planimeter - Area of an irregular figure
Penetrometer – Soil strength
Permeameter – Hydraulic conductivity
Potometer – Transpiration
Pressure Chamber / Thermocouple – Leaf water potential
Pressure Membrane Apparatus – Field capacity
Psychrometer – Leaf water potential / RH
Pycnometer – Soil specific gravity
Pyradiometer – Long and short wave radiation
Pyranometer – Total incoming solar radiation
Pyrheliometer – Direct solar radiation
Quantum Sensor – PAR (Photosynthetically Active Radiation)
Rain Gauge – Amount of rainfall
Spectrophotometer – Wavelength of light
Tensiometer – Soil moisture tension (0.8 bar)
Thermograph – Continuous measuring temperature
Wind Vane – Wind direction