Barr & Stroud Sahara 20-60x80 MC BAK-4 spotting scope (20-60x magnification, 80mm lens diameter) (Accessories)
The first delivered spotting scope had not centrally located optical axis. (Probably the prisms were set incorrectly.) - Decreased! - 2. In the spotting scope super fast supplied by Amazon, the optical axis is ok, but the zoom eyepiece can be adjuste
