Maryland Blue Crab Measuring Gauge (5 Inches)

The MDBlues Crab Measuring Gauge is a simple, durable tool made for fast and reliable sizing of Maryland blue crabs. Instead of fumbling with a ruler or tape, place the crab into the center opening and instantly see whether it meets the 5-inch point-to-point minimum.

Built for real crabbing conditions, this gauge is compact, easy to handle, and made to hold up to repeated use on boats, docks, and shorelines.

How it works
Slide the crab into the center cutout, point to point. If the crab fits the opening, it meets the size requirement. If it doesn’t, it’s a quick and easy release—no guesswork.

Features

• 5-inch sizing window for Maryland blue crabs

• Fast, one-handed measuring to keep your workflow moving

• Durable construction designed for repeated outdoor use

• Compact and lightweight — easy to store in a bucket, pocket, or crate

• Buoyant design — may float if dropped in the water (depending on conditions)

Important note
Always follow current Maryland regulations regarding minimum size, season dates, and catch limits. This tool is intended to assist with quick sizing and does not replace responsibility for legal compliance.