Warren-Knight Instrument Co. - Philadelphia, PA
Manufacturer, Custom Manufacturer, Service Company
Custom manufacturer of compasses including surveyors compasses. Accessories include compass tripod with aluminum telescoping leg, ball-joint tangent accessory & surveyors compass staff with hardwood & steel point. Specifications include sights ranging up to 6.5 in., width ranging up to 6.4 in. & length ranging up to 7.5 in. Certification, calibration, repair & rental services available with NIST traceability. Markets served include the military, research institutes & commercial industries.
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Ames Instrument Co. - Canajoharie, NY
Manufacturer
Plain, Vernier, Basic

Terra Tech, LLC - Eugene, OR
Manufacturer
Tools & Supplies For General Forestry, Reforestation, Surveying, Fire

OceanServer Technology, Inc. - Fall River, MA
Manufacturer
Manufacturer of digital compasses including marine compasses & surveyors’ compasses. Types of solid state tilt compensated 3-Axis attitude digital compasses include nano size compasses (TTL), compasses with serial connection, compasses with USB & serial connections & compasses with depth option. Compasses feature precise heading & roll & pitch data for rapid attitude measurement. Compass applications include robots & man portable devices. Compasses have Microsoft Windows®, Mac® & Linux® compatible drivers for evaluation & testing. Compass evaluation kits are also available.

Easy Drive - San Antonio, TX
Distributor, Manufacturer
Wood Stakes, Survey & Optical Instruments, GPS Systems

Precision Navigation Inc. - Santa Rosa, CA
Manufacturer
Manufacturer Of Electronic Compass Modules, Magnetometers, Tilt Sensors & Navigation Systems For Surveying Equipment & OEM Applications Only

Brunton Outdoor Group - Riverton, WY
Manufacturer
Manufacturer of surveyors' compasses.