| Instruments Used | Measures |
| Altimeter | Height |
| Aneroid barometer | Atmospheric pressure |
| Anemometer | Wind speed/velocity |
| Atmometer | Leaf temperature |
| Auxanometer | Growth of plant |
| Barograph | Continuous atmospheric pressure |
| Crescograph | Growth of plant |
| Cryometer | Measuring temp. below 0ºC |
| Cambel stokes recorder | Sunshine duration |
| Drosometer | Dew |
| Hygrometer/Psychrometer | Relative humidity (RH) |
| Evaporimeter | Evapotranspiration |
| Hydrometer | Relative density of liquids |
| Heliograph | Duration of bright sunshine hours |
| Infra-red thermometer | Canopy temperature |
| Irrometer | Water stress, soil moisture tension |
| Infiltrometer | Infiltration |
| Lactometer | Fat percent in milk |
| Lysimeter | Evapotranspiration |
| Permeameter | Hydraulic conductivity |
| Pycnometer | Soil specific gravity |
| Pyrheliometer | Direct solar radiation |
| Pyradiometer | Both long and short wave radiation |
| Quantum sensor | PAR |
| Psychrometer | Leaf water potential/RH |
| Porometer | Transpiration rate (ET) |
| Pyranometer | Total incoming solar radiation |
| Piezometer | Depth of water table, measuring hydrostatic pressure of groundwater |
| Multimeter | Rainfall (RF) |
| Pressure chamber/Thermocouple | Leaf water potential |
| Pressure membrane apparatus | Field capacity |
| Pyrgeometer | Longwave radiation |
| Rain gauge | Amount of rainfall |
| Spectrophotometer | Wavelength of light |
| Thermograph | Continuous measuring temperature |
| Tensiometer | Soil moisture tension (0.8 bar) |
| Wind vane | Wind direction |
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