Called a "culling stick" on the Chesapeake, these measuring gauges make measuring blue crabs and other crabs faster and easier. Keeps you legal - no more guessing. 

Up your game with pro-grade Loomis culling sticks, available in 5" and 5.5" with an oversized handle for easy gripping, even when wearing gloves. And they float.

Recreational measuring tools vary depending on availability. Photo for reference only.