This antique Bausch & Lomb Optical Abbe Refractometer comes with a beautiful wooden box for storage. The instrument was manufactured in the United States and is perfect for those interested in collecting scientific instruments from the 1930s to the present day. It is ideal for use in laboratories, and can be used for a variety of scientific experiments and observations.

The refractometer is in good working condition and has been well-maintained over the years. It is a great addition to any collection of scientific instruments, and is sure to impress those who appreciate the history and beauty of such items.