Hi-Vac Cylindrical Four Point Probe Head

A version of the cylindrical probe which can be used at high vacuum.

Cylindrical probe for use at high vacuum

The probe is unanodised and has had blind holes removed where possible. High vacuum wire is used for the connections which are crimped rather than soldered. A ruby ball is used for the insulation pad. All Jandel probes are built to a high level of mechanical accuracy. Specifications for radii, spacing and planarity are verified by video inspection system and optical interferometer. Loads are verified by electronic force gauge. Each probe has upper and lower jeweled needle guides.

Probe spacing

1.00mm, 1.27mm, 1.591mm (needle to needle)


+/- 10 microns


Linear array only


Tungsten carbide 0.4mm diameter

Needle option

50% Osmium alloy tips are available


12.5, 25, 40, 100, 150, 200, 300, 500 microns

Retraction to pad

0.5 mm


+/- 0.025mm or better


Fixed between 10g and 250g

Electrical leakage

1013 ohms resistance between needles at 500 volts


If you require any further information on Cylindrical Probe for use at High Vacuum please do not hesitate to contact us!