For use on customer ’s own equipment, some Veeco equipment, or where an A&M Fell style probe has previously been used. Some Veeco equipment requires a differently shaped probe (Compact Probe). Please let us know if you are unsure which probe you require. 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.