Tel: (480) 988-2256 Fax: (480) 452-0172

About Jandel Engineering and Jandel Four Point Probing Equipment

About the Company
Jandel Engineering was established in 1967. Prior to founding Jandel Engineering, Managing Director John Clark worked for A & M Fell in London. It was at this company that the first commercially available four point probe head, the ‘Fell’ probe head, was designed by John Clark and a colleague. Since this original design many improvements have been introduced.

Q. Who makes Jandel’s probes?

Experts! All probe heads are made by experienced engineers with a minimum of six years intensive training. Some of our probe builders can boast nearly 20 years experience.

Q. Why use Jandel probes?

Jandel Probes offer the accuracy and perfection of more than 40 years experience. Tip radii and probe spacings are checked by interferometer and video inspection for certainty of accuracy. Spring loadings are checked by electronic force gauge.

Unique Standard specifications include:

  • Upper and lower guides are jewelled
  • Solid tungsten carbide needles for superior durability and accuracy
  • Teflon insulation giving minimum leakage

Q. What model of probe should I use?

Jandel has many different shapes of probe heads. The best one for you depends entirely on your application and what machine (if any) you are using. Contact us with details of the probe you have now and we will let you know the best probe for you. Alternatively, if you wish to make a custom set up, we can help you to identify which probe will work best.

Q. Why are there so many different characteristics?

Different users wish to probe different items, which means it is necessary to provide a wide range of characteristics. For instance someone wishing to measure a layer beneath an oxide would need sharp probes to penetrate the oxide layer, whereas a very thin metallic layer may require a much larger radius on the needles so that they do not puncture the layer. Similarly, some spacings are designed in order to help with the maths involved in working out resistivity, someone else may just require a very close spacing probe in order to fit all the probes on the sample.

Q. Which probe tip specifications should I use?

The characteristics needed vary depending on the material being probed. If you contact us we may be able to advise the best characteristics for your samples from past experience. Alternatively you have the option of sending us a typical sample of the material you wish to probe and we will test it so that you can be sure to receive the best characteristics for your application. There is no charge for this service. More about the choice of probe tip specifications can be found here. Determining the Best Choice of Probe Tip Specifications for a Given Material


Four-Point-Probes is a division of Bridge Technology. To request further information please call Bridge Technology at (480) 988-2256 or send e-mail to Larry Bridge at: sales@bridgetec.com