The large 29" Telescope is 2 3/8-inches in diameter and 9 1/2 inches (24.1 cm) long when collapsed. It is solid, weighing 2 pounds (3 1/2 oz), and is constructed entirely of threaded solid brass tubing and fittings with no glued components. This 27-power telescope has four brass pipes, with the largest pipe being tapered. It features the highest quality precision multi-coated optics available and produces sharp, non-inverted (upright) images. Unlike our other polished brass telescopes, this premium telescope has a special scratch resistant clear coating that eliminates tarnish and fingerprints on the brass. A built-in sunshade extends 2 inches (5 cm) to reduce lens flare. The telescope measures a full 29 5/8 inches (74 cm) when fully extended and the objective lens is 54 mm in diameter. The 29-inch Premium Brass Telescope comes complete with a beautiful Mahogany Case. The case measures 10 1/2 inches (26.7 cm) long, 3 5/16 inches (7.6 cm) deep, and 3 inches (8.6 cm) tall.