Nikon 20-45X/25-56X Zoom MC Fieldscope Eyepiece

The technical details behind this eyepiece
Increase your magnification capability with the Nikon 20-45X/25-56X Zoom MC Fieldscope Eyepiece. This versatile eyepiece offers 20-45x magnification when using with the Fieldscope III or EDIII and can provide 2-degree real angular field of view, approximately 35m at 1000m, and 9 relative brightness at 20x magnification. It can also offer 25-56x magnification when using with the Fieldscope ED82, and it can provide 1.6-degree real angular field of view, approximately 28m at 1000m, and 10.9 relative brightness at 25x magnification. Moreover, it can also be used with Fieldscope ED50 where it provides 13-30x magnification.
Key Features

Provides variable magnification
14.4 (at 13x) Relative Brightness
Weighs 100g
12.9mm (at 13x) eye relief
Top three reasons we think you will love this eyepiece

Easy to use
Impressive magnification
Versatile