Roller Point for Dial Indicators

The surface to be tested runs conveniently underneath this rolling contact point. The roller allows for continuous readings to be taken. Used with flat metals, foils, sheets of fabric, etc. A lock nut (included) keeps the roller aligned.

Available in non damaging Teflon®, hardened steel or stainless steel. The wheel can have a
radius or it can be flat. You will probably want to use the radius wheel on a flat surface and the flat wheel (without radius) when measuring something like wire or edges.

roller point with flat wheel
The stainless roller without radius is not as hard as hardened steel (your other option) and will wear faster under abrasive circumstances, but it will not corrode if used under wet or damp conditions.

Stainless steel rollers will be a natural steel color whereas hardened steel will have some black anodizing on the wheel.
schematic drawing of roller point with radius wheel
The schematic illustration shows the wheel with a radius. The dimensions are approximate but valid for all roller points.

If you can't find the correct thread size here, consider using a
converter. Rolling contact points are frequently used with Mitutoyo or Teclock indicators but will fit any indicator having the correct thread size.

Thread size M2 is commonly used on CMM machines.
Roller Material Wheel Thread Order No. US$
hardened steel flat 4-48 MTC12-17 39.95
hardened steel radius 4-48 MTC12-18 39.95
TeflonĀ® radius 4-48 MTC12-22 39.95
stainless steel flat 4-48 MTC12-25 39.95
stainless steel radius 4-48 MTC12-26 39.95
hardened steel flat M2.5 MTC12-19 39.95
hardened steel radius M2.5 MTC12-20 39.95
stainless steel flat M2.5 MTC12-27 39.95
stainless steel radius M2.5 MTC12-28 39.95
TeflonĀ® radius M2.5 MTC12-24 39.95
stainless steel radius M2 (for CMM) MTC12-30 39.95
More about dial and digital indicator contact points

The "other" Swiss indicator still made in Switzerland.

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