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Seiler Instrument and Manufacturing Co., Inc. was established in 1945. In 1913, Eric H. Seiler entered and studied for a decade at the prestigious Zeiss-Jena School of Fine Optics in Germany. This is where he attained his Masters Degree in Fine Optics, and due to the war moved to the United States of America and opened Seiler’s doors in 1945.


Seiler is now a five division company, manufacturing for the United States Military, Microscope, Survey, Planetarium and Night Vision.

Seiler Instruments are built on quality, honesty and service.


                                                               3433 Tree Ct. Industrial Blvd.              

                                                                        St. Louis, Mo 63122

                                                               314 968 2282 / 800 489 2282




Seiler Instrument and Manufacturing Company earns ISO 9001:2000 Certification.
Seiler Instrument Company completed its ISO 9001:2000 Certification process in August 2003. The global certification includes all four divisions of the company. Seiler Instrument is a prime supplier manufacturer of military Fire Control Systems and mechanical-optical equipment. Seiler Instrument Company has been in business for over 50 years and initiated the program with Missouri Enterprise, a industrial consulting firm