This is a satellite dish that can be used for different scales. However it is designed to fit 35th scale best it has a diameter of 30 mm.
It comes with two mounting pipes so it can be used as a roof mounted or wall mounted dish.
Also available is a dish with a diameter of 60 mm, double packs (with two dishes) and a combo pack (with 30 and 60 mm dish).
I am sorry to say that I cannot include a instruction sheet in your order. It can be downloaded from the website where you can also find more information and designs: www.3dinscale.com