Optical tooling
Target Centering Kit

A Target Centering Kit is a specialized metrology toolset used to precisely locate the center of internal or external diameters—such as bores, shafts, and bearing journals—relative to an instrument's line of sight. These kits are essential in industrial alignment tasks where sub-thousandth-of-an-inch accuracy is required for large mechanical assemblies.
What we carry
WK-58-8400 Target Centering Kit
- WK-58-8410 Adjustable Target Holder (Large Bores): Device holds a target in any bore from 18 in. to 68½ in. in diameter. The target holder is supported by three telescoping legs. Used with the WK-58-8420 Indicator Holder.
- WK-58-8415 Legs : Three sets of legs are supplied for use in bores of diameters from 16 in. to 23½ in., 23½ in. to 38½ in. and 38½ in. to 68½ in., respectively. Legs for use in bores 65” to 121” in diameter are also available.
- WK-58-8420 Indicator Holder: Sits on WK-58-8410 Target Holder; Locates center of bore by rotating.
- WK-58-8425 Extension Rod: For WK-58-8420 for use on bores of diameters from 67 in. to 121 in.
- WK-58-8428 Dial Indicator: For use with WK-58-8420 Indicator Holder, reading to .001 in., graduated 0-100, range .250 in.
- WK-58-8455 Target Centering Device: Micrometer stick with vernier micrometer reading to .001 in. and a V-type adapter on one end. Consists of three sets of each extensions necessary to fit bores from 5 in. to 21½ in. diameter.