These are very compact hand held telescopes made of solid brass. They have 4 brass pipes when fully extended & a sunshade that protects the lens from the glare of the sun. They magnify objects up to 12 times & have a lens cover protects the outer lens during transportation. To get an image into focus the telescope must be fully extended. Then the pipe closest to the eyepiece is slowly pushed inwards till the object comes clearly into focus. The 4-draw telescopes are 43 cm long when fully extended & 15 cm when shut. The diameter of the front lens is 3.5 cm. They sold in a beautiful wooden presentation box.