GRUS S7902 Navigation Ring 80MM (Two in One Pair) Astronomical Telescope Navigation System

GRUS S7902 Navigation Ring 80MM (Two in One Pair) Astronomical Telescope Navigation System

Number: S7902
Size: 80MM
Thickness: 6mm
Maximum diameter of guiding mirror: 70mm
Minimum diameter of guiding mirror: 35mm
Material: Aluminum alloy
Ring weight: 110 * 2=220g