Autofocus - when the camera is pointed at an object, the lens will automatically focus on the subject This function (SLRs) can be activated usually by depressing the exposure button half way
Air Force AMS - Aeronautical Material Specification AN - Air Force and Navy AND - Air Force-Navy Design ARP - Aircraft Recommended Practice AS - Aeronautical Standard Rad Radius ASD - Aeronautical Systems Division ASTM - American Society for Testing Materials CS or W - Cross-Section °C - Degrees Celsius Dia - Diameter fpm - Feet per minute; fpm = shaft die x rpm x 26 ID - Inside Diameter JIC - Joint Industry Conference on Hydraulic Standards for Industrial Equipment MIL - Military Specification MS - Military Standard OD - Outside Diameter psi - Pounds per square inch RMS - Root-mean-square; average value of surface roughness measured in microinches Spec - Specification USAF - United States Air Force