Art Ludwig's Sound Page
All aspects of sound; music, human hearing, sound system design. Room acoustics. A non-mathematical description of sound, and also a rigorous mathematical derivation based on molecular statistics.
http://www.silcom.com/~aludwig/

Ohmart International
Manufacture and worldwide sales of non-contact level measurement, density measurement, weight measurement process control equipment.
http://www.ohmart.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/

ANV Measurement Systems
Website for the sole UK distributor of Rion sound and vibration measurement products. The site shows product details and also describes hire, calibration and consultancy services.
http://www.noise-and-vibration.co.uk

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

PRIME Measurement Products, LLC
A manufacturer of flow, pressure and level measurement solutions for the process and bulk goods industries.
http://www.prime-measurement.com

Anderson Instrument Co.
Manufacturers a complete line of instruments for measurement of pressure, temperature, and level. These products include: gauges,pressure and level transmitters, liquid level monitors, danitary RTDs, digital indicating thermometers and recording controllers.
http://www.andinst.com/

AUDITEC : Newtest product suite
Newtest is Service Level Management software for measurement and monitoring of response times, level of service and quality of service of business processes using active agents (probes)to ensure compliance with Service level Agreements.
http://www.auditec-newtest.com

Solid Applied Technologies Ltd.
Solid Applied Technologies (SAT) is a privately owned company, part of Solid Group which holds a strong presence in the world's major business centers and is active in financial, hi-tech industrial products, real estate, software and consumer markets. SAT' core competence derives from developing, manufacturing and marketing of level measurement gauging devices based on patented ultrasonic and radar technologies.
http://www.solidappliedtechnologies.com/

E-Components International
ECII distributes for major manufacturers of liquid level gauges and sensors. Your one stop for all gauge components. Adjustable gauges in stock.
http://www.e-components.net/