Underground mapping services for cities and cemeteries. Sentry Mapping uses Ground Penetrating Radar (GPR) and GPS to perform subsurface mapping services from subsurface utility locating to cemetery plot mapping. Serving all 48 contiguous United States.
GPR Professional Services for Cities & Cemeteries
We exist to make your job easier. We use the most modern GPR and GPS technology to provide exact renderings of your cemetery or as-built maps of municipal underground infrastructure. Sentry can give precise locations of known and unknown burials.