Measures approx. 6 7/8" closed up. Fully extended, including the pencil top nob, it is 12". It is square around, about 1/4" on each of the 4 sides. Sterling for most, if not all of it - does have #2 lead for pencil end and may have another metal to hold the lead - not sure. Entire piece weighs a little under 1 ounce. Marked STERLING with the Edward Todd & Co. mark & PAT. JANY19.1897. Great gift for the person who has everythin...g, the antique collector, sterling or tool collector! Would also be O.K. to use.Any questions let me know. Will be well packed & insured.