An old rangefinger used by German in WWII for flak cannon rangefinding.
Due to amount of work on reticle stuff, the British style range finder distance limit is set from 50 to 500 meters, while the original one is set from 50 to 1000 meters.
And it's not quite accurate...
Put the whole thing into your backpack slot
Grab the front frame and adjust elevation angle
Grab the front knob on the scope body to adjust IPD.
Grab the left Knob on the scope body (the one near the leather belt) to adjust vertical angle
Grab the right Knob on the scope body (the one near the leather belt) to adjust range
If the Image become 3D and combined into one piece, the correct number will turn from blurry to clear.
If the Upper and Lower image line up in right lens, The correct range will show in left lens.
1.0.0 Added EM1MR36 in Tools&Toys----->Backpacks.