PRECISION SENSING
Precision measurement.
Real-world performance.
Designed and built in the UK for over 40 years, Gill sensors and instruments are trusted in 150+ countries by national meteorological services, defence programmes, energy operators and research teams, where accurate data and reliable performance matter.
From wind, weather and heat to liquid level, position, oil condition and engine control, Gill technology turns difficult conditions into usable information for decision-making, protection and performance.
1985
Founded in Lymington
40+
Years of measurement expertise
150+
Countries
2025
King’s Award for Enterprise, International Trade
START HERE
What do you need to achieve?
Start with your application, the challenge you’re facing or the outcome you need. We’ll help you find the best fit.
Find a sensor
I know what I need to measure and want to compare the technologies.
Explore productsFind a solution
I know the application or problem, but I’m not sure which technology fits.
Explore applicationsMeet a specification
I have technical requirements, a tender or specification I need to satisfy.
Check your requirementsWHY GILL
Where others see a difficult measurement, we see an engineering problem worth solving
Put a sensor where the conditions are unforgiving. Make it survive. Make it accurate. Make it useful. Then do it again.
On a land-speed record car. Inside a racing gearbox. On a rail axle. 828 metres up on the tallest building on the planet. Across the Atlantic on an autonomous ship. In the middle of a hurricane.
These are not demonstrations. They are working measurements, solving real engineering problems in places where ordinary sensing is not enough.
Choose your measurement. See it proven in the field.
Proven in the field
A Guinness World Record in Hurricane Sam
A custom WindMaster on a Saildrone sailed into Hurricane Sam and measured 109.83 knots, now a Guinness World Record.
Read the Saildrone story
The sensor behind this story
WindMaster
3-axis ultrasonic anemometer
The wind range
Every Gill wind sensor is ultrasonic with no moving parts, so there is nothing mechanical to wear out.
WindSonic2-axis, compact
WindUltra2-axis, low power
WindObserver2-axis, heated steel- WindMaster3-axis
R3 Research3-axis, high rate
Proven in the field
Weather data for a ship with nobody aboard
MaxiMet gave the Mayflower Autonomous Ship its weather data on an Atlantic crossing with no crew.
Read the Mayflower application note
The sensor behind this story
MaxiMet
Compact all-in-one weather station
The weather range
Compact all-in-one MaxiMet stations and separable MetConnect stations measure wind, temperature, humidity, pressure, solar radiation and rainfall.
Explore weather stations
Proven in the field
Rainfall measured with infrared light
TruMet PW100, launched in 2026, measures rainfall with infrared light and no moving parts.
Read the launch story
The sensor behind this story
TruMet PW100
Infrared optical rain gauge
The rainfall range
TruMet PW100 measures rainfall optically with no moving parts, from 0 to 200 mm/hr.
Explore rainfallProven in the field
The first compact station with a black globe
The GMX552 is the first compact weather station to integrate a black globe sensor for heat stress.
Read the launch story
The sensor behind this story
MaxiMet GMX552
Heat stress weather station with black globe
Heat stress monitoring
MaxiMet GMX552 measures wet bulb globe temperature alongside wind, temperature, humidity and pressure.
Explore heat stress monitoringProven in the field
Fuel and oil level sensing in Formula 1
Gill capacitive fuel and oil level sensors, with poles, podiums and world championships behind them.
See motorsport
The sensor behind this story
Gill level sensors
Capacitive liquid level sensors
The level range
Capacitive liquid level sensors with no moving parts and sealed solid-state electronics.
Explore level sensors
Proven in the field
Non-contact sensing from pedals to winglets
Non-contact Gill sensors from pedals to winglets at 1,000 mph.
Read the Bloodhound story
The sensor behind this story
Blade position sensors
Non-contact linear and rotary position sensors
The Blade range
Blade non-contact linear and rotary position sensors have unlimited mechanical life, configurable ranges and IP67 construction, sealed for temporary immersion (1 m for 30 min).
Explore position sensors
Proven in the field
Round-the-clock wear monitoring
A US aerospace component maker with NASA on its customer list runs WearDetect 24 hours a day.
Read the aerospace story
The sensor behind this story
WearDetect
Oil debris sensor
Condition monitoring
WearDetect captures ferrous wear debris in oil and reports fine and coarse particles, water presence and oil temperature as it happens.
Explore condition monitoringProven in the field
Gill ignition sensing on two wheels
Gill ignition sensing has ridden on Triumph motorcycles.
See gas engine controls
The sensor behind this story
Gill gas engine controls
Ignition modules and air/fuel ratio control
Gas engine controls
GS8, GS12 and GT6 ignition modules and the AF120 air/fuel ratio controller for spark-ignited gas engines, IP67 rated and configured in Gill software.
Explore gas engine controls
UKAS-accredited calibration through Labcal
Calibrated from -30 °C to +140 °C
Resistance thermometers, thermocouples, digital thermometers, probes and data loggers, calibrated in baths and blocks with an expanded uncertainty from 0.10 °C.
Explore temperature calibration
The laboratory behind this measurement
Labcal
Gill Group’s UKAS-accredited calibration laboratory, Lab 0625
The six parameters
Every parameter is calibrated in Lymington under one laboratory number, with a UKAS certificate stating the measured values, the expanded uncertainty at k=2 and the traceability to national standards.
- Temperature-30 °C to +140 °C
- Gas and air flow0.024 mL/min to 12,983 L/min
- Air velocity0.1 to 50 m/s
- PressureVacuum to 1,400 bar
- Liquid flow0.5 mL/min to 500 L/min
- Humidity10 to 90 %rh
Need a solution for a specific measurement challenge? Our engineers can assess your application and explore the options, from existing technologies to application-specific development.
INDUSTRIES AND APPLICATIONS
The application changes everything
At sea, environmental data informs critical decisions. On a turbine, reliable data informs control. In extreme heat, conditions determine safe working limits. Inside a sealed tank, access is limited.
Every application sets its own demands. And the measurement must work where it matters.
Marine and Offshore
When getting to the sensor means getting on a boat.
Renewable Energy
When the weather becomes part of the system.
Defence and Security
When the conditions can become the hazard.
Research and Environment
When the data is the result.
Industrial and Process
When stopping the system to check the sensor isn’t an option.
Transport and Infrastructure
When the environment becomes part of the control system.
Agriculture
When local conditions change the working day.
Motorsport and High Performance
When every gram, degree and millimetre matters.
Aviation and Airports
When space is tight and weight is not negotiable.
More industries and applications
Explore nine of the industries where Gill’s technology is widely used, or discover more. Each industry page covers the applications, measurement requirements and relevant technical resources to help you identify the right solution.
THE DIFFERENCE
Reliability starts with the design
Bearings wear. Floats stick. Contacts degrade. Gill uses ultrasonic, capacitive, inductive and optical technologies to remove mechanical failure points wherever the application allows.
More than 40 years of engineering have gone into understanding where removing the mechanism can deliver a better measurement and a lower lifetime cost. And when the catalogue stops, the engineering starts.
Trusted worldwide.Designed, manufactured and tested in Lymington, with direct access to the people who understand the technology.
PROVEN WHERE IT COUNTS
Not just tested. Put to the test.
From record-breaking wind speeds and land-speed cars to the world’s tallest building and tsunami-monitoring buoys, Gill technology has been put to work in extraordinary environments. Explore the stories behind the measurements.
PROVEN IN THE FIELD
Real-world proof. Extraordinary conditions.
A ship that crossed the Atlantic without a crew
Gill MaxiMet technology provided environmental data aboard the Mayflower Autonomous Ship, supporting an autonomous transatlantic mission.
Read the case study
A world record in a Category 4 hurricane
A custom Gill WindMaster aboard a Saildrone USV measured 109.83 knots during Hurricane Sam, contributing to a Guinness World Record for the highest wind speed recorded by an unmanned vessel.
Read the Saildrone story
Wind measurement at 828 metres
Gill WindSonic sensors provide wind data at the Burj Khalifa, supporting monitoring at the world’s tallest building.
Read the Burj Khalifa case studySUPPORT AND SERVICE
Support that lasts the life of the instrument
Already using Gill? Find the documentation, software and calibration you need, or learn how each measurement technology works.
OUR TECHNOLOGIES
Measure what matters. Control what comes next.
Gill develops sensing and control technologies across environmental and industrial applications, from individual instruments to integrated measurement systems.
Wind sensors
Ultrasonic wind measurement for operational monitoring, control, marine applications and research.
Explore wind sensorsWeather stations
Integrated and modular weather stations that bring together the environmental measurements an application actually needs.
Explore weather stationsRain gauges
Optical precipitation measurement for dependable rainfall monitoring without the funnels, tipping buckets and moving mechanisms used by traditional designs.
Explore rainfallHeat stress monitors
Integrated environmental measurement for calculating WBGT and Thermal Work Limit, supporting heat-risk assessment, workforce safety and operational decisions.
Explore heat stress monitoringLevel sensors
Continuous capacitive level measurement for fuel, water, oil and challenging liquids, including applications where floats can stick or foul.
Explore level sensorsCondition monitoring
Real-time ferrous wear-debris monitoring for oil-lubricated machinery, helping reveal developing wear between planned maintenance intervals.
Explore condition monitoringPosition sensors
Non-contact linear and rotary position sensing for steering, actuation and mechanical systems where contact and wear are unwanted.
Explore position sensorsGas engine controls
Ignition and air/fuel control technologies for gas engines where accurate timing and control directly affect performance.
Explore gas engine controlsResearch anemometers
Research-grade 3-axis ultrasonic anemometers for eddy covariance, flux and turbulence studies, sampling at 50 Hz or 100 Hz.
Explore research anemometersYOUR APPLICATION
Tell us about your application
Describe what you need to measure, where and under what conditions. Our team will help you find the right approach, even if you’re not sure which product you need.
- We aim to respond in one working day. A real person reads every enquiry, not a queue.
- No product name needed. That is the question we answer.
- No sales call unless you ask. The recommendation comes by email.
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