This vintage brass surface magnifier is a compact optical tool used for inspecting small details up close. It features a solid brass cylindrical body with a top viewing lens and a side opening that allows light to enter.

You place the magnifier directly over an object and look down through the lens. This fixed viewing distance provides consistent magnification without any adjustment. Tools like this were commonly used for examining paper, small parts, or fine surface details.

The brass body shows a developed patina from age and use. The glass lens remains intact and provides magnification.

Today, it works well as a functional desk magnifier, display piece, or addition to an office or workshop setting.