INCLINABLE BINOCULAR HEAD: 0-180 deg INCLINABLE. THIS BINOCULAR OFFERS A NEW COMFORT LEVEL. IF YOU SPEND A SIGNIFICANT TIME USING A MICROSCOPE THE INCLINABLE BINOCULAR WILL GREATLY REDUCE MSD's as well as NECK AND MUSCLE STRAIN. WHEN PURCHASING THIS BINOCULAR YOU MAY ALSO WANT TO CONSIDER PURCHASING THE "ALL IN ONE" OPTICAL ROTATION DEVICE.