(HJ220) This glass hydrometer jar stands 14 inches tall and is 2 inches in diameter. Much larger than most hydrometer jars. It has a broad plastic base making it hard to teeter over. Also has a molded pour spout. Very easy to clean and sanitize. Will work with any of the hydrometers we offer. The convenience of a hydrometer jar makes taking Gravity readings of your wine or beer a simple task. Just partially fill the hydrometer jar with the liquid to be tested. Submerge the hydrometer, and look through the clear glass to get your reading.