Broken Screw Head from an Antique Bausch & Lomb Stereomicroscope Click on the title above each image to see the animated model of the fracture surface created with Helicon Focus and Helicon 3D Viewer. Right-click on the image below and select View Image to see it at full resolution in a new browser window.

Detail of Broken Screw at 40X. Stack: 0.002 inch increments.