This fascinating instrument is an original viscometer, a vintage item made in Germany in the 1980s. This device was designed to be use in a laboratory to determine the fluids viscosity grade. The viscometer is really curious and provides reliable results, being such an interesting piece for its rareness and great condition. It is in good condition and works fine, and comes in its original wooden case with a complete accessory set. It also includes an original instruction booklet, printed in German and greatly preserved. The viscometer is made of two glass cylinders or tubes, one located inside the other. The bigger tube includes a thermometer. In order to determine the viscosity grade of a fluid, the user will drop the fluid into the inner tube. The outer tube must be filled with warm water (according to the temperatures indicated in the booklets tables). Then he or she will open the top black circular lid and drop one of the balls included in the set. The ball will be chosen according to the fluid; this information is also reflected in the tables. Then, the user will measure the time taken by the ball to fall from the tubes top line to the bottom line, and look in the tables for the viscosity grade corresponding to that measurement. The two glass cylinders or tubes that make up the viscometer stand on a chrome-plated base with adjustable legs that guarantee its stability. This singular instrument is a precise and delicate piece with a very special charm. The whole set comes in a solid light-colored wooden box that preserves the original finish. It mounts two silvery locks and three top screws where the viscometer can be attached. Inside the case we find a printed sticker with information about a research laboratory and a metal plate with the engraved serial number 33029. For its precision and originality, this amazing vintage viscometer will be the starring piece of any collection of rare laboratory antiques.