Seiler's Service and Repair Department has always been an integral part of the company. In its early years, the company flourished as a survey instrument service and repair shop under the leadership of Eric H. Seiler.

The Service and Repair Department still provides a vital function for customers. Staffed with factory-trained service technicians, the department can handle repairs and service on all surveying instruments, electronic instruments, microscopes, camera lenses, telescopes, and binoculars as well as other types of optical and electronic equipment.