John & Jeane Kretzschmar | 864.590.2883 • 864.909.3162 |

​​​​SAMSCO - Spartan Armstrong Metering Supply Company

424 Carrington Drive • Boiling Springs, SC 29316

Your outside metering resource.


Knopp Inc., a TESCO company, is a design and manufacturing company located in Emeryville, California alongside the beautiful San Francisco Bay.

We build high quality precision voltage and current transformers, electric meter and transformer test equipment, and electrical instruments for the utility and electrical industries. Our voltage and current transformer test equipment is used by electric utilities throughout the world to verify the accuracy of transformers used to measure electric energy.

More Manufacturers we represent