AMS 3012.92 地下水深度计（3/8“探头和100M量规）

Accuracy: Within 1/100 of a foot (3mm)

They utilize a durable polypropylene storage reel with a rugged solid aluminum frame.

Their highly accurate Polyethylene-coated steel tape is available in either standard/English or metric unit increments.

The 5/8" (1.59cm) probe is made with stainless steel conductors for durability, and it can be serviced in the field.

The 3/8" (0.95cm) is not replaceable.

The probes also feature:

• Adjustable sensitivity to prevent false triggering.

• Audible and visible alarms activated when the probe makes contact with water.

• Easily replaced 9 volt battery.

• Built-in reel hanger and tape guide for longer tape life. 

A water resistant padded carrying case to protect the instrument is available.