ML-3 Magnetic Locator TS21729 you can choose from two

you can choose from two detector settings - fine and course

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

The NAR09E collapses to 5 feet in length when not in use

Material Capacity: 16 ft

Allowing for faster and easier readings without the need for loosening and tightening the detector everytime it needs to be moved

ML-3 Magnetic Locator TS21729 you can choose from twoThe 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.