The Model 260 3-Axis Goniometer is used to hold crystals in the process of determining crystallographic orientation using either Laue back reflection or optical orientation techniques. The integral track mount is designed to fit a 2.19" wide or narrower x-ray or optical track. There is ±25° of rotation in two of the axes and a full 360° degrees of rotation in the other. The Model 260 is designed so that a 2" diameter crystal mounted on the goniometer with a 1/2" high mounting block is 3.625 inches above the track. The P/N 01- riser can be used to raise the Model 260 by 1 inch when working with smaller crystals.