From the product description, check product page for current description, price and availability:

A high-quality imported hydrometer at a great price. 15.5 inch long, with a solid metal base and easy-to-read 3-scale readout. Packaged, with instructions. Readings idealized at 60°F.Great for wine or beer. Scales: balling: 0-38 percent potential abv: 0-22 percent specific gravity: 0.990 – 1.170.