This true to original copy of a marine telescope not only is a decorative piece - I used it for bird observation, and with its 10fold magnification it turned out to be better than my 8-30 binoculars. However, it has to be stabilized to get a sharp image.
It is made from bass and polished blank.
Length when pushed together: 17.5 cm / 16.8"
Extended (3x) to the full length: 47 cm / 18.5"
Diameter of the lense: 35 mm / 1.3"