The target mechanism is mounted on a flange and is made up of three major parts. Three Thompson rods are mounted in the base with a lead screw and a rotatable square shaft. The other ends of each of these are supported by a ring. A "spider" with 6 Thompson ball bushings is mounted on the 3 Thompson shafts and is moved vertically by the lead screw. This motion selects which target will be exposed to the beam. The center of the spider rotates and is supported by 2 bearings. The target ladder is attached to an extension of the center piece. A gear attached to the spider is driven by the square shaft with another gear which turns the center of the spider and consequently rotates the targets. Two drives for the vertical and the rotational motion are mounted on the outside of the bottom flange and the rotation is transferred into the vacuum through Ferrofluidics Corp. rotary feedthroughs. Each drive is an Electro-Craft IQ2000 positioning drive module controlled by an IQ Master for Windows software package. For details see the IQ Master Manual available in the Hall A counting house. Both vertical and rotational position are indicated by separate encoders located outside the vacuum. Absolute positions have been surveyed and the accuracy of the position relative to the beam line is 0.020 in. Repeatability in the vertical positions with repect to the center of the target is 0.006 in. The accuracy in the absolute angular position of the target normal relative to the beam line is XX. The repeatability of obtaining the angular position is 0.1 .