Not your standard issue periscope, but an enhanced ProtoScope for Rook. ProtoScope offers 3 different viewing situations and can easily attach onto item (32415) for Ultimate ProtoTool Mode.
Not your standard issue periscope, but an enhanced Proto-Scope for Rook
Proto-Scope offers 3 different viewing selections
Attach onto the Proto-Tool (item 32415) for Ultimate Proto-Tool adventure