Terra Universal, Inc. - Fullerton, CA
Distributor, Manufacturer, Custom Manufacturer, Service Company
Manufacturer of hygrometers, anemometers & other measuring & recording equipment.
www.terrauniversal.com/environmental-chambe...

Micro Quality Calibration, Inc. - Chatsworth, CA
Distributor, Custom Manufacturer, Service Company
An ISO/IEC 17025-2005 ACCR certified distributor of anemometers, scale & tension dynamometers, hydrometers, hygrometers, pyrometers & thermometers & electrical measurement instrumentation & repairs, testing & calibration of RF, electronic, temperature & humidity instrumentation.
www.microqualitycalibration.com

Electro Rent Corp. - Van Nuys, CA
Distributor, Service Company
ISO 9001:2008 & AS 9100 certified worldwide distributor of new & used hygrometers. Available in dimensions of 11 in. L x 10 in. W x 5 in. H or 16 in. L x 16 in. W x 6 in. H.
Brand Names: Honeywell
www.electrorent.com/products/details/honeyw...

Laurel Electronics, Inc. - Costa Mesa, CA
Manufacturer, Custom Manufacturer
Manufacturer 1/8 DIN industrial process meters that accept the voltage or current output from a wide range of humidity transducers, can be scaled to display relative humidity. Optional dual relays for alarm or control can be latching or non-latching, be programmed for hysteresis or deviation mode around two setpoints. Optional RS232, RS485 & Modbus RS485 serial communications, isolated analog output. Meters are NEMA 4X rated from front panel & are UL®, CE & RoHS certified.
www.laurels.com/process.htm

Abbeon Cal Inc. - Santa Barbara, CA
Distributor
Distributor of hygrometers for measuring humidity. Hygrometers are available with various configurations & sizes. Weather stations, analog dial instruments, environmental sensors, hand held digital instruments, climate & vibration sensors, air flowmeters, polariscopes, humidity, dataloggers, psychrometers, thermometers, durometers & barometers are also available.

Davis/Inotek - Irwindale, CA
Distributor, Manufacturer, Custom Manufacturer
100,000 Test, Measurement, Process & Control Instruments. NIST Traceable Calibration & Certification, All Performed In Compliance With ISO-9002, ISO Guide 25-17025 Standards. A Complete Line Of High-End Used & Rental Test Equipment

Spectrum Chemicals & Laboratory Products - Gardena, CA
Distributor, Manufacturer, Custom Manufacturer
ISO 9001 registered woman owned manufacturer & global distributor of microfiltration & ultrafiltration systems, water purification & ultra pure water systems, water stills, hydrometers, hygrometers, sterilizers, steam sterilizers, & a wide range of analytical & laboratory equipment for research, health care, & industrial applications.

Hygrometrix - Alpine, CA
Manufacturer
Manufacturer

Air & Water, Inc. - Santa Ana, CA
Distributor, Custom Manufacturer
Distributor of humidifiers & hygrometers. Other products include residential & commercial heating & cooling products.
Brand Names: Extech, Honeywell

Don Wolf & Associates, Inc. - Chatsworth, CA
Distributor, Custom Manufacturer, Service Company
Distributor of hygrometers. Types include thermo-hygromters & thermo-hygromters with alarms. Thermo-hygromters are available in temperatures ranging from 38 degrees F to 120 degrees F. Thermo-hygromters with alarms are available in temperatures ranging from 15 degrees F to 160 degrees F. Also available with relative humidity ranging from 0 percent to 100 percent . JIT delivery available.
Brand Names: Testo

Mitchell Instrument Company Inc. - San Marcos, CA
Distributor, Manufacturer, Service Company
Instrument Repair & Calibrating Service