Castle Group Ltd
Manufacturer and supplier of sound level meters and vibration meters. Sales, rental, training, calibration and consultancy services available.
http://www.castlegroup.co.uk

Quest Technologies Inc.
Quest Technologies is the System Solution for Noise Dosimeters, Sound Level Meters, Heat Stress Monitors, Gas Detection Monitors, Vibration Monitors, Indoor Air Quality Monitors and QuestSuite Professional Software.
http://www.quest-technologies.com/

Yu Ching Technology Co. Ltd.
Develops fiber optic components and optronic testers including fiber optic power meters, fiber optic light sources, laser power meters, optical talk sets and sound level meters. Includes product electrical and optical specifications and outline dimensions.
http://www.yc-tech.com/

Simpson Electric Co.
This is a description test
http://www.simpsonelectric.com/

Valeport Limited
Manufacturer of hydrometric and oceanographic instruments and sensors that can be used to measure tides, currents, wave and sound velocity.
http://www.valeport.co.uk/

Jenco Instruments
Jenco Instruments is an ISO9001 certified manufacturer of water quality meters and instruments such as pH meters, ORP meters, conductivity meters, TDS meters, dissolved oxygen meters, ion meters and temperature meters
http://www.jencoi.com

Cirrus Research plc
Sound Level Meters, Noise Dosemeters and Noise measurement instruments from Cirrus Research plc. Cirrus is the world leader in noise measurement instruments for health and safety, industrial and environmental monitoring.
http://www.cirrusresearch.co.uk/

Elmetron
Oferujemy wysokiej jako¶ci przyrz±dy pomiarowe do pomiarów fizyko-chemicznych. pH-metry, konduktometry, jonometry, tlenomierze, termometry, wilgotno¶ciomierze do powietrza oraz grubo¶ciomierze
http://elmetron.com.pl/

Larson Davis Acoustic Measurement Products
Larson Davis Inc is a world leader in the design, manufacture, and distribution of acoustic and vibration measurement systems and industrial hygiene instrumentation. Larson-Davis product line includes condenser microphones and accessories, sound level meters, portable and realtime frequency analyzers, noise dosimeters, environmental noise monitoring systems. Larson-Davis Laboratories is a major supplier of integrated systems used for perimeter sound monitoring.
http://www.larsondavis.com

Pulsar Instruments Ltd.
Sound Level Meters from Pulsar Instruments Plc. Noise Measurement Instrumentation
http://www.pulsarinstruments.com/