2" x 2" Stage w/Dial Mic Heads 15X Eyepiece Lens & 2X Objective Lens 90 degree broken cross-hair reticle 67mm working distance Crossed roller bearings and keyway stage construction ensure a true linear traverse in X and Y axis. Large dovetail assures 2 axis squareness in relation to the stage surface. The Eyepiece protractor is graduated in 1 degree. The eyepiece and angle can be measured in 6 minutes. Features of the Micrometer Heads... 1" Measuring Range Bi-directional graduation for versatile measurement. Provided with non-rotation spindle tip. Floating thimble allows zero setting at any spindle position. Graduations: 0.0001"