Check that an arbor, roll or shaft is 90 degrees to an alignment wire to within 0.001 inch!

The Sensing Head has a contact point which is adjusted until it just touches the wire.  When it touches, an electrical circuit is completed and a red indicator light will come on.  Measurements can be made to within 0.001 inch.

New Design - Version 2

Example of using the swing arm (old style) to check an arbor

Piano Wire Alignment Jig (sometimes called a swing arm) is first used to setup a piano wire at right angles to the arbour. With the jig strapped to the arbour, the contact point at the end of the arm sweeps an arc that is exactly 90 degrees to the arbour. The contact point is an electronic sensing head that shines a light when the contact point touches the wire. It is possible to detect contact within 0.0005 inch.

Once the wire is in place, the swing arm is strapped on the feed rolls to check whether they are square to the wire. The infeed and outfeed bed rolls should also be checked.

The swing arm comes with two removeable arms:

• A long arm for swinging the arbor. The longer the swing, the more accurate the measurement
• A short arm for tighter spaces, such as feed rolls where there press rolls above.

With this kit and a precision machinist's level, you can accurately align an edger for maximum performance.