This measuring tool has multiple measurements in varying sizes for crab and lobster species commonly found on the east coast of North America. The East Coast version measuring tool comes with pre-cut measurements in 4.5”, 5”, 5.25”, 5.5”, 5.75” 6”, 6-1/4”, & 6-1/2” with an 8” ruler on top. This gauge is also equipped with updated Florida Stone Crab and Spiny Lobster gauges of 2-7/8” and 3”. It also use for peeler crab legal size measurement. The thick plastic design ensures durability for season after season even in harsh conditions.