Seiler Instrument is a contract manufacturer, specializing in fire-control equipment, as well as a distributor of surveying instruments, microscopes and Zeiss planetaria. There are several main divisions at the company: Manufacturing, Surveying, Microscope, CAD, Night Vision, Planetarium, and Administration.The Manufacturing Division at Seiler Instrument specializes in optical fire-control equipment and components for predominately the U.S. Military.

The division manufactures periscopes, telescopes, target collimators, boresights, borescopes, gunsights, dioptometers, tripods, and metal components and offers CNC machining, turning, optical/mechanical assembly, testing, SPC, R&D and performs inspections to MIL-I-45208 or MIL-Q-9858.Our Surveying Division offers a variety of state-of-the-art equipment from well known United States, European, and Japanese manufacturers. With additional offices in Kansas City, Indianapolis, Chicago, and Sheboygan, Seiler instrument is now even more accessible and able to serve a much wider area. Architects, contractors, surveyors, and engineers know they can choose from a wide variety of products ranging from supplies to robotic total stations and GPS systems All offices offer sales, service, rentals, and training.