Walz
WALZ - one of the worlds top producers of highly sophisticated photosynthesis measuring systems. The current product line ranges from the well known PAM Chlorophyll Fluorometers to measuring systems of plant gas exchange for physiological and ecophysiological research
http://www.walz.com/

KSV Instruments Ltd
Langmuir-Blodgett, Tensiometers, Contact Angle Meters, QCM, BAM systems from world leader in Surface Chemistry instrumentation.
http://www.ksvltd.com/

Raytech Measuring Systems
Raytech Measuring Systems builds and sells precision measuring equipment for industrial manufacturers.
http://www.raytech-measuring.com

Division in Mean and Extreme Ratio
The base angle of the largest trinalges of most representations of Sri Yantra are about 52 degrees, close to the base angle of the Great Pyrmaid of Cheops, which is 51deg50'. With such a base angle, the ratio of the hypotenuse to half the base is phi, the Golden Ratio.
http://alumni.cse.ucsc.edu/~mikel/sriyantra/golden.html

Dioptra
The earliest dioptra (c.300 BCE) was a device for measuring the angle, in parts of a "Sign", between two celestial objects. Photos and descriptions of how to make one and how they work.
http://members.tripod.com/Bluestar_4/Dioptra.html

Optical Gaging Products, Inc.
Optical Gaging Products, Inc. is the leading supplier of non-contact video, laser and multi-sensor measuring systems used throughout the world for quality control, coordinate measuring, and general purpose inspection. A Quality Vision International company.
http://www.ogpnet.com

Force Measuring Systems AG
FMS Force Measuring Systems AG - Products for automation on running materials: Web tension controlling and measuring systems, Web guiding systems, Belt scales for bulk conveyors, Force sensors, Electronic equipment.
http://www.fms-technology.com/

McPherson, Inc.
McPherson, Inc. manufactures Instruments and Systems for Spectroscopy through the optical electromagnetic spectrum. We design and build tools that measure the frequency and intensity of light wavelengths / rays with good spectral resolution over a wide free range. McPherson instruments are available for teaching, physics and astronomy applications through the X Ray, Vacuum, UV, Visible and Infrared (IR, including MWIR and LWIR) wavelengths. Vacuum and ultra high vacuum (UHV) models are available in most designs. McPherson delivers laboratory spectrometers for fiber optic, Raman, reflectance, transmittance and absorbance. Our imaging spectrographs are for plasma diagnostics and optical monitoring. For broadband, full spectrum, color and spectral line instruments consider our monochromator spectral test stations. In addition, our applied systems to meter detector response, and analyze lighting, filters, glass and chemicals or control (ultraviolet or full spectrum) radiation generated from light sources. We like to offer workstations to allow your spectrum determination and analysis in the teaching and research science lab. We offer unique light measuring tools like the quartz prism monochromator and novel accessories like broadband, spectrally agile reflective telescopes to complement your system. We also repair and recondition used spectrometers and monochromators (built by McPherson, Inc.)
http://www.mcphersoninc.com/

Taft-Peirce Metrology
Suburban Tool, Inc. - THE TAFT-PEIRCE PRODUCT LINE
http://taftpeirce.com

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/