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Saltwater Gear
Ruler
Keeps you legal
Size limits protect young fish. A ruler on the deck settles the keep-or-release question in two seconds.
What it does
Measures fish for size limits.
When to use it
Before deciding to keep a fish.
Common mistake
Guessing the size.
🛒 Shop Guide
Stick-on measuring tape for a cooler lid
$6 – $12
Always where you need it.
Folding fish ruler with a bump board
$15 – $30
Fast, accurate, gentle on the fish.
What to look for
- Adhesive deck ruler or a folding fish ruler
- Clear inch and centimeter markings
- Rust-proof material
Skip this
Skip measuring with your hand or a shoe — that is how tickets happen.
Prices are typical US ranges and change over time. Ask a grown-up and your local tackle shop before buying — shop staff will help you match gear to your home water for free.
🎓 How to Use It
- 1Wet the ruler first so it does not strip the fish's protective slime.
- 2Lay the fish flat, nose to the zero mark, and read to the tail tip.
- 3Check the current local limit with an adult before you keep anything.
- 4Undersized? Back in the water immediately, facing into the current.
Care & storage
Rinse and check that the markings have not faded.
🛟 Safety Tips
- Measure fast — a fish out of water is on a 15 second clock.
- Mind spines and gill plates while you hold it.
🧑✈️Captain Tip
Learn one piece of gear per trip. By the end of the summer you will know your whole kit better than most adults.