Essco Calibration Laboratory

Essco is New England's largest and most comprehensive calibration laboratory.

Essco Calibration Laboratory was founded in 1961 and purchased by Walsh Engineering Services, Inc., in 1974.
Over the past four decades, the Walsh family has grown Essco from five people to more than 70. Today, we operate out of a modern 27,200 square foot facility in Chelmsford, Mass., that features four environmentally controlled labs. Between our full-service calibration laboratories and onsite work at client facilities, we complete 100,000+ electronic, mechanical and dimensional calibrations a year.
New England’s largest and most diverse calibration and repair laboratory, we service about 2,500 businesses throughout the United States and abroad.