Vintage map measurer from Perplex, Germany, made in 1950. This handheld distance measuring roller features a metal body with a rotating hanging ring for easy carrying and storage. The surface is engraved with the Perplex logo and multiple scales. The outer circumference displays inches and centimeters, while the inner circumference features percentage scales corresponding to map scales. It is suitable for quickly measuring straight-line distances on maps, drawings, fabrics, etc. By rolling the lower roller along the measurement target, the needle moves, allowing you to read the distance directly from the scale. It is still usable today, and the scales are clearly readable. The surface shows some signs of wear and tear due to age, but it is a piece that combines practicality and collectibility. Recommended for those who appreciate classic measuring instruments, industrial-style displays, and vintage stationery. Size: Total length approximately 7.2cm, width approximately 3.5cm