Englo OÜ
Measuring tools and equipment for road making, building, and mining. Products include metal detectors, measuring wheels, and slope measuring devices. Features product data and specifications.
http://www.englo.ee/

Oxigraf Inc.
Oxygen Analyzers: Oxigraf is YOUR source for fast laser diode oxygen analyzers and OEM oxygen sensors.
http://www.oxigraf.com/

The Oxygen Edge and Oxy-Chum
Portable oxygen systems are superior life support devices, adapting to all bait tanks and live wells for transporting and supercharging live bait fish, tournament bass, crappie and walleye.
http://www.oxyedge-chum.com

Radon Analytics
Willkommen auf der Internetpräsenzvon RADON ANALYTICS
http://www.radon-analytics.com

Alarming Oxygen Depletion Caused by Hydrogen Combustion and Fuel Cells
Hydrogen combustion implies the permanent removal from our atmosphere of directly usable oxygen, a serious environmental problem called oxygen depletion, since the combustion turns oxygen into water whose separation to restore the original oxygen is prohibitive due to cost. Abstract.
http://arxiv.org/abs/physics/0009014

U S Tape
A domestic manufacturer of measuring tapes, tape measures and other specialty measuring devices.
http://www.ustape.com/

Delta Ohm Inc.
Strumenti di misura portatili - Portable measuring instruments
http://www.deltaohm.com/

Tessco Technologies Incorporated
TESSCO Technologies (Nasdaq:TESS) is an industry-leading, value-added supplier of more than 30,000 critical products and solutions needed to design, build, run, maintain and use everything wireless.
http://www.tessco.com/

Oxyguard International
Manufacturer of dissolved oxygen measuring equipment, for use in acquaculture, waste water treatment, power plants, and other industrial applications.
http://www.oxyguard.dk/index.html

ENOTEC
ENOTEC One of the Leading Suppliers of InSitu Flue Gas Measuring and InSitu Analyser Systems, führend in der Entwicklung und Produktion von InSitu Sauerstoffmessungen und Emissionsmessungen
http://www.enotec.com