ML-3 Magnetic Locator TS21729 this device can be updated

this device can be updated to future NEC revisions by installing a new chip and setting the calculator to the latest settings

you can choose from two detector settings - fine and course

This electronics only includes an internal and an external battery that powers the device up to 72 hours of continuous use

This ruler can be used to take measurements of windows and door frames

it is durable and sturdy to withstand up to 50 pounds of weight

ML-3 Magnetic Locator TS21729 this device can be updatedThe SubSurface Instruments ML 3 Magnetic Locator 18ML 3S detects hidden or underground objects made of iron, cobalt, or nickel. Objects made of these materials are called ferrous or ferromagnetic. You can adjust the ML 3s sensitivity and block out possible interfering magnetic field signals. Look to the ML 3s LCD meter to determine when your battery is low. And use the built in micro processor memory to store your sensitivity settings for future use.