high-quality compass box, VEB ALDA work Thuringia, complete, High-quality precision compass box / drawing instruments by the Thuringian company ALDA from Altendambach To use when drawing in the field of architecture, geometry, etc. Production in Germany (former GDR) All parts are available and in good condition Alloy nickel Silver (copper nickel-zinc) probably black artificial leather or similar material On the top there are remnants of a sticker, which has been removed. Closure with a sliding pin on the left and right (the eye for the right closure is missing on the inside there is a red velvet lining Dimensions: 28.7 x 20 x 2.6 cm. Age approx. from around 1950-1960 Nickel silver is the name of a copper-nickel-zinc alloy with high corrosion resistance, strength, and a silver-like appearance. Nickel silver is used in particular for tableware, musical instruments, hardware and jewellery. There are also the old names for this material Alpaka (Alpacca), Argentan, See photos Insured shipping