You are buying a vintage Soviet dual marking gauge. With two independently adjustable wooden rods, this gauge lets you set two measurements at once, so you can quickly alternate between them when transferring or marking repetitive dimensions. It measures approx. 12" (30 cm), the rods are 12" x 0.6" (30 x 1.5 cm) and the housing is approx. 3" x 1.5" x 1.5" (7.5 x 4 x 4 cm). This gauge has Soviet marking and is dated '83. It shows some use but overall in very good vintage condition and will be a nice addition to your collection or workshop decoration. Please see the photos and let me know if you have any questions. Thank you.