Welcome to the website of Australia's first and only multi-functional measuring guide for Australian crustaceans (lobsters / crayfish and crabs) and molluscs (shellfish).

REEF RULER is an Australian designed and manufactured fishing tool which will revolutionise your fishing experience.

Designed by Lateral Line Engineering, REEF RULER is made from corrosion resistant 316 stainless steel.

REEF RULER is a rigid, thermally stable measuring platform for your fishing needs.

REEF RULER is a multi-species, 3D functional tool with all relevant species and zones labelled.

A State by State REEF RULER model is available to cover the main target species in all States (except NT), complete with an escape gap measure for those relevant States.

REEF RULER is a 'guide only' for sizing purposes and is not recommended for commercial use. It should be used in conjunction with relevant State Fisheries regulations.

A lanyard hole provides the option of safe and secure usage and storage.

No matter where you live, you can measure the main target species: Crayfish, Crabs, Abalone and Scallops with just one tool - REEF RULER.