Keystone Precision Instruments was founded in 1989. Through strong leadership and one of the most talented work forces in the industry Keystone Precision Instruments has grown into one of the most successful construction and survey equipment sales companies in the northeastern United States. The company employs more than 50 people and covers a primary area from Maine to northern Virginia. The home office is located in Allentown, Pennsylvania, a state-of the-art, 28,000-square-foot building. Branch offices are located in Crofton, Maryland , Milford, Massachusetts, and Syracuse, New York. Our staff includes six licensed land surveyors, two civil engineers, plus machine control specialists, installers and a full complement of in-house personnel featuring trained repair and service departme