Book excerpt: Binocular Repair Repairing & Adjusting Binoculars Repairing & Adjusting Binoculars is a complete guide to binocular repair, Covers repair, cleaning, and adjustment of binoculars -- for the hobbyist as well as the advanced binocular repair technician. Includes: Optical and mechanical operation. The tools you will need for binocular repair. Disassembly and how to avoid disturbing binocular adjustments. Cleaning optics. Lubrication. Repairs -- how to repair binoculars. Collimation and alignment of the optics. Adjustments -- collimation, rotational error, diopter settings and more. Zoom binoculars -- how they work and how to adjust them. Repair your own binoculars. Or add binocular repair to your business. Learn how to restore binoculars to proper working condition. Repairing & Adjusting Binoculars is fully illustrated with over 150 drawings and photos. Copyright 1996 Learn to repair Brunton, Burris, Bushnell, Cannon, Dakota, Fujinon, Konus, Leica, Leupold, Minolta, Navy, Nikon, Pentax, Simmons, Steiner, Swarovski, Swift, Tasco, Vanguard, Zeiss and many others.