This device is part of the 2250/2273 series designed to find the path and estimated depth of underground utilities. :

: Often sold as a kit, such as the 3M Dynatel Locator 2273X-C12 , which may include a 3" coupler and is 12W ready.

is a silicate-based adhesive sometimes associated with this product code in industrial catalogs for bonding fiber products to steel or refractory walls. 3M™ Dynatel™ Locator 2273X C12 Cable/Pipe/Fault, 3

: Features an "expander" function to make signal peaks and nulls more pronounced for accurate tracking.