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  • Accurate Sizing: Made from sturdy, rust-resistant aluminum, this gauge features a precise 4.5-inch opening to ensure you only keep legal-sized Pismo clams.


  • High Visibility: The bright neon green color makes it easy to spot on the beach, so you'll never misplace it again.


  • Multi-Functional: Pop open a cold beverage after a long day of clamming with the built-in bottle opener.


  • Never Lose It Again: The included ball bungee tether allows you to securely attach the gauge to your belt loop, backpack, or anywhere else convenient.


Please see clamming regulations: 


  • License

    You must have a valid saltwater fishing license from the Department of Fish and Game if you are 16 years or older.

  • Size

    Clams must be at least 4.5 inches in diameter if found south of the San Luis Obispo–Monterey county boundary, or 5 inches if found north of that boundary. You must bring a RIGID measuring device, such as a caliper, to measure the clams.

  • Quantity

    You can take up to 10 clams per person per day. Each person must have their own container and cannot combine clams with others.

  • Hours

    You can only dig for clams between 30 minutes before sunrise and 30 minutes after sunset.

  • Undersized clams

    You must immediately return undersized clams to the hole you dug them from, burying them at least two inches deep. Taking undersized clams home is illegal and harmful to the environment.

  • Other

    You should not throw clams back into the ocean, as this can damage their shells and kill them. 

Pismo Clam Gauge (Caliper)

  • All sales are final. We do not allow returns for refunds. Exchange of new, unused items is only eligible in the event that a defective product is received. 

    If a defective product is received, or if the wrong item is shipped, you may request an exchange authorization. Simply contact us by email. The buyer is responsible for return shipping costs. 

  • Shipping is only $3.99. Orders are usually shipped out in 1 business day, via USPS priority, or USPS Ground Advantage, if the package is light enough. Orders are typically shipped out in 1-2 days and received within 2-5 days. A tracking # will be provided by email.

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