Metrol super-high precision switches have an incredible 0.5 micron accuracy. The "tool setter" variants are often used to detect/adjust for tool wear in machine tool applications. With no temperature drift and a service life of 3 million cycles, these aluminum or stainless-steel housed switches are dustproof /waterproof (IP67).
4mm Diameter BP4SWA
Precision Limit Switch
Traditional limit switches and even electronic proximity sensors are limited in terms of accuracy and repeatability. These cost-effective, ultra precise mechanical limit switches have repeatability down to 10, 5, 3, and even 0.5 microns (µm) depending on the specific model. That's 1/2000th of a millimeter. For scale: a piece of paper is typically 70-180 µm and a human hair is typically 50-60 µm wide.
Along with their high precision these limit switches are also some of the smallest switches/sensors available. Their tiny size allows them to be mounted in extremely tight locations. With a 4mm diameter barrel and length of only 12.8 mm; model BP4SWA is the smallest precision limit switch on the market
Prices start at
3 micron precision touch limit switches start at
5 micron precision touch limit switches start at
90-Degree straight touch limit switches start at
Sliding angled limit switches start at
Low contact force limit switches start at
0.5 micron high precision limit switches start at
10 micron ball plunger limit switches start at
10 micron high temperature limit switches start at
High vacuum resistance limit switches are