Fish Weight and Length Measuring System.. The Sonic-Laser Scale XP is a multifunction ultrasonic fish measuring device that doubles as a solid state digital scale. Traditional fish measuring devices require the user to lay a fish on a measuring board or stretch out a conventional measuring device. Well documented research indicates that laying a fish on its side creates considerable damage to internal organs and removes the valuable bacteria fighting “slime”. The Sonic-Laser Scale XP will allow the user to pick the fish out of the water using a stress free lip grip, weigh the fish with a corrosion free digital scale, and measure the length without allowing human interaction with its delicate body. User programming input allows automatic access to minimum and maximum weight and length requirements for tournament release guidance and aids in allowing you to obey local fishing regulations. To Use: Squeeze the lip grip open and attach it to the fish’s mouth. Hold the fish vertical with the tail slightly touching a solid object (ground, boat deck, water, etc). Weight, Length and legal limits are now at your finger tips.