Connect2it, LLC
Spring probes, pogo probes BGA, PGA, LGA probes and fine interconnects, conductive elastomers, micro test clips, switch probes, automotive probes, automation test systems and pin loaders. (Pop-ups and consoles too)
http://www.connect2it.com/

Quality Thermistor Inc.
Manufactures through hole and SMD NTC and PTC thermistors, thermistor beads and probes, temperature probes and thermistor probes. Online catalogue, application notes and purchasing.
http://www.thermistor.com/

Topac Conductivity Meters and Probes
Directory page for temperature, conductivity, and salinity meters and probes with various cell constants, RS232 and mains or battery power
http://www.topac.com/conductivity_directory.html

Solartron Metrology
Manufacture analogue and digital linear measuring LVDT gauging and displacement transducers and probes using contact methods with associated conditioning and display electronics.
http://www.solartronmetrology.com/

HEITO
HEITO conçoit et fabrique en standard ou à la demande vos thermostats VIGITHERME miniatures a réglage fixe et vos appareils de mesure électrochimiques industriels et de laboratoire : pH-mètres, redox, conductivité, oxygène dissous, électrodes et sondes industrielles
http://www.heito.com/

Carbide Probes Inc.
Family owned and operated over 53 years, Carbide Probes, Inc. has become one of the world leaders in replacement styli.
http://www.carbideprobes.com/

Molecular Probes Gallery
Invitrogen is committed to being the leading provider of novel fluorescent reagents and detection solutions that advance scientific and biomedical research worldwide.
http://www.probes.com/servlets/gallery/

Ellab A/S
Ellab improves the quality of life by contributing to confidence in food and health products, by providing solutions for measuring, recording, monitoring and validating critical parameters of thermal processing.
http://www.ellab.com

Applied NanoStructures
The US manufacturer High Quality AFM Probes, SPM Probes, Probe Tips, MFM probes, EFM Probes, Contact Mode Probes, Non-contact Mode Probes, Silicon Probes, Silicon Nitride Cantilevers, Tipless Cantilever, Gold Coated Cantilevers, Pt coated Cantilvers, Gold Coated Tips, Silicon MEMS Structures including SPM and AFM tips and Nano-Apertures .
http://www.appnano.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/