Full, half or handicap accessible bases are standard, though any type of custom mounting is available to maintain architectural harmony or to meet special installation requirements. 

Viewing scopes can also be set up to accept donations.

You can see the options available for donation scope by clicking here.

Half Base Mark I & Mark III (available for Mark II)

Full Base Mark I & Mark III (available for Mark II)

Handicap Accessible Base
Mark I, Mark II & Mark III