Company Features

Electric Vehicle Service Equipment (EVSE) Test System

Electric Vehicle Supply Equipment (EVSE) Test System

Catalog No.

With the growing demand for electric vehicles (EV), there needs to be a simple and accurate method to test EV charging systems. Test the accuracy of AC and DC voltages and currents with TESCO’s Electric Vehicle Service Equipment (EVSE) Test System. 


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Meter Site Analyzer

Meter Site Analyzer

Catalog No.

Need an all-in-one field test kit?  TESCO’s Meter Site Analyzer is the most versatile and complete tool for testing the entire functionality of transformer-rated metering installations in a convenient, portable, and ULTRA lightweight kit—only 17.8 lbs! This equipment is compliant with ANSI C12.20.

Signal Strength Analyzer
Desktop Meter Test Station 2990

Desktop Meter Test Station

Catalog No.

TESCO’s 2990 revolutionizes meter testing by providing full series parallel meter testing in a small, budget-friendly desktop package. The state-of-the-art 2990’s fully ANSI compliant test board offers complete testing of all meters under the widest range of test conditions.

Meter Test Switches

Meter Test Switches

Catalog No. Meter Test Switch

TESCO introduced the original Meter Test Switch in the early 1920’s. Today, TESCO’s line of Test Switches has been redesigned with the intention to combine the best features of tried and proven switching methods with improvements in materials and construction.

Transformer Rated Pre-wired Meter Enclosures

Transformer Rated Pre-Wired
Meter Enclosures

Catalog No. Pre-wired Meter Enclosures

TESCO Transformer-Rated Pre-Wired Meter Enclosures are built with the TESCO tradition of quality and durability. TESCO enclosures are designed for use in commercial and industrial metering installations where voltage ratings of 480 and above are required. The enclosures are available with ringless, single piece or two piece covers and can be pre-wired between the test switch and socket to meet your exact specifications.

Our Products

Discover our diverse selection of products tailored to meet your metering and testing needs!

Software Updates

Stay ahead in your metering solutions, visit the TESCO Device Manager page and download the latest version, TESCO Device Manager. Enhance your utility management today with TDM's innovative features and reliable performance.

Testing and Support

Discover the wide range of services tailored to meet your various utility needs

History of Watthour Meter

  Explore the fascinating history of watthour metering. This comprehensive resource provides an in-depth look at various electromechanical and early electronic meters manufactured in North America.

Upcoming Conferences

The Meter Schools and Trade Shows directory lists information on all upcoming meter conferences and meter schools in North America. Come see us in person on the event dates listed. 


TESCO HQ 925 Canal St, Bristol, PA, United States

We invite you to join us this July 21-24, 2024, at TESCO’s world headquarters for TESCOOL 2024, an event that uniquely combines a multi-tiered Meter School with TESCO’s Users Group. […]


  Explore the presentations TESCO has delivered at previous meter schools and conferences to gain insights of past contributions and expertise in this field.

Contact Us

Have a question about a product or service?




925 Canal Street Bristol, PA 19007

Directions to our main office

  1. From Jefferson Avenue, turn onto Canal Street.
  2. Immediately past the loading dock, turn right in to the courtyard.
  3. You may park in the TESCO visitor spots on the right hand side of the courtyard.
  4. Go through the door marked “Grundy Commons” in the courtyard and take the elevator to the third floor.
  5. Turn right off the elevator and head to TESCO’s main reception area.

TESCO - The Eastern Specialty Company

925 Canal Street
Bristol, PA 19007
+1 215-228-0500


TESCO – The Eastern Specialty Company was founded in 1904 by a metering engineer at the Philadelphia Electric Company (PECO) who saw a need for safer products in the industry and designed the first meter test switch to promote safer field operations. TESCO also designed the first load boxes and transformer burden test equipment, and became the industry standard for electric meter testing throughout the 20th century. Utilities all across North America have used and relied on TESCO products for 117 years.

Our Family of Companies

  • TESCO is ISO 9001:2015 Certified 
  • The TESCO Calibration & Testing Laboratory is ISO/IEC 17025:2017 Accredited
  • ANSI/NCSL Z540-1-1994 Compliant (MIL-STD-45662A plus software control)
  • Traceable reference standards maintained through national laboratories (e.g. NRC, NIST) in a diverse extended scope of accreditation

TESCO recognizes the commitment to supplier diversity that is embraced by corporations and government agencies today, and we can add diversity to your supply chain. TESCO has a Certified Women Owned Business supplier that you can purchase our products from. Please contact us for more information.