Infrared technology eliminates moving parts, funnel blockages and calibration drift. Works standalone or integrated with MaxiMet weather stations.
View TruMet specificationsBy need
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Family
Compact, integrated weather monitoring. Multiple parameters from a single sensor, configured for the environment.
Plug-and-play multi-parameter weather sensing for most applications. Reliable in demanding environments, no separate sensors to wire and configure.
MaxiMetView the range ›IP68-rated with integrated 6-axis compass for ship and offshore deployments.
MaxiMet MarineAnti-icing for low-temperature environments and arctic deployments.
Heated MaxiMetModular sensor integration for research and meteorological services.
MetConnectFamily
Infrared optical rainfall measurement. No moving parts, no calibration drift, no funnel blockages. Standalone or integrated with weather stations.
Family
Heat stress and Wet Bulb Globe Temperature (WBGT) monitoring for occupational health, sport, military and construction compliance.
Family
Ultrasonic wind speed and direction sensors plus dedicated wind data displays. No moving parts, no annual replacement, reliable in the harshest conditions.
Cost-effective, high-performance ultrasonic wind sensor for most applications. The most-shipped wind sensor in the Gill range.
WindSonicView the range ›Compact and high-accuracy with easy setup for portable and rooftop deployments.
WindUltraRobust stainless steel sensor with ATEX approval and optional heating for icing.
WindObserverTFT displays for marine bridge, helideck and field installations. Configurable layouts.
TFT Wind Display rangeFamily
3-axis precision wind measurement with vertical wind component. Output rates up to 100 Hz for turbulence, eddy covariance and atmospheric flux research.
High-precision 3-axis ultrasonic anemometer used in precision applications for over 30 years across meteorology, wind energy and applied research.
WindMasterView the range ›Aluminium and carbon fibre construction, 50 Hz and 100 Hz output rates with PRT and analogue input options.
R3 seriesHorizontal head for highly accurate vertical flow analysis. Stainless steel with PRT and 6 analogue inputs.
HS series3,000km across the Australian outback. Compact weather data, race-critical reliability.
Read the case studyBy industry
Gill Instruments is an independent British manufacturer of precision environmental sensors and instruments, operating in over 150 countries and recognised with a King's Award for Enterprise in International Trade.
Gill's first infrared optical rain gauge, the TruMet PW100, addresses the reliability and precision limitations of traditional tipping bucket sensors across the full range of precipitation conditions.
READ MORE →The MaxiMet GMX552 is the first compact weather station to integrate a black globe sensor for heat stress monitoring, providing real-time WBGT data for safety-critical outdoor environments.
READ MORE →Gill Instruments was officially presented with the King's Award for Enterprise in International Trade by His Majesty's Lord-Lieutenant of Hampshire, Nigel Atkinson Esq, at a ceremony at the company's Lymington headquarters.
READ MORE →Gill Instruments was founded in 1984 by Mike and Lesley Gill in Lymington, Hampshire, with a simple goal: to make wind measurement more reliable by removing the parts that break. That meant eliminating mechanical sensors and using ultrasonic technology instead.
Forty years later, Gill is the market leader in ultrasonic anemometry. Products are designed and manufactured in Lymington and sold to customers across meteorological agencies, renewable energy operators, marine and offshore engineers, aviation authorities and defence organisations in over 150 countries.
Gill Group comprises four businesses: Gill Instruments (wind sensors and weather stations), Gill Sensors and Controls (industrial and motorsport sensors), Gill R&D (engineering consultancy) and Labcal (UKAS-accredited calibration services).
Awarded the King's Award for Enterprise in International Trade in 2024, one of the most prestigious business honours in the United Kingdom. Presented at the company's Lymington headquarters in September 2025.
ISO 9001 quality management. ISO 45001 occupational health and safety. ATEX and IECEx certification for equipment used in explosive atmospheres. CSA approval for North American markets. UKAS accreditation held by Labcal for calibration services.
Gill pioneered ultrasonic anemometry for commercial applications. Products have been installed on the Burj Khalifa, deployed on Antarctic research stations, and adopted by the world's leading national meteorological organisations.
