This telescope produces a sharp non-inverting (upright) image. It has a precision 30mm objective lens and the optics are the highest quality with full anti-reflection coatings. The telescope is solid brass. Unlike our other spyglass telescopes where you have to shorten the smallest pipe to focus, this telescope has a unique feature where you simply rotate the eyepiece to bring the image into crystal clear focus. This telescope has a special scratch resistant clear coating that eliminates tarnish and fingerprints on the brass. This 25 power telescope comes with a hand-sewn leather sheath. It has bright and sharp optics. It comes with a leatherette zippered carrying case with both a hand strap, a belt loop, and lens cleaning cloth. The telescope is 1 3/8 (35 mm) inches in diameter, 13 1/2 inches (34.3 cm) long when fully extended and 5 3/8 inches (13.6 cm) long when collapsed and weighs 7.5 ounces (213 grams). It is engraved "Stanley London" near the eyepiece.