Since 1945, Seiler has provided world-class solutions in full-service contract manufacturing to partners across industries. Excellence is our guiding principle, and we promise an unparalleled level of quality in every project down to the last detail. As a family-owned and operated business, we also believe that strong relationships are just as important as the quality products and services we provide. While we specialize in high precision machining and optical instrument assembly, our commitment to growth has led to the establishment of five other divisions: Geospatial, GeoDrones, Medical, Planetarium, and Design Solutions.
Seiler Precision Manufacturing is a full-service contract manufacturer specializing in high precision components and assemblies serving the defense and aerospace markets. From prototype to full scale production, in medium to high complexity, the Seiler Team will produce affordable high precision parts consistently and reliably. In addition, from complex mechanical assemblies to electrical box builds, the Seiler Team is a turn-key partner for your precision machining and assembly requirements.
Precision Machining
Assembly
Seiler Geospatial is one of the largest suppliers of brand name surveying and supply equipment in the Midwest. We offer our clients the most advanced survey, construction, mapping/asset management, and software technology on the market. We specialize in sales, service, repair and support.
Industries We Serve
Seiler Planetarium is the exclusive distributor of ZEISS Planetariums in the United States and Canada. We sell, repair, and service custom ZEISS projection systems designed to grow alongside your passion for exploring the stars.
Our Systems
Theater
Drones have revolutionized the ways mapping and surveying are done. Our GeoDrones business is dedicated to providing a custom drone solution for your Unmanned Aerial Systems (UAS) needs.
Industries We Serve
The transaction allows Seiler to sharpen focus on its core businesses while positioning the Autodesk and Bluebeam software offerings for continued growth under MicroCAD’s leadership. A team of Seiler’s Autodesk and Bluebeam specialists will join MicroCAD to ensure continuity of service and support for existing customers.
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ST. LOUIS (November 11, 2025) – Seiler Instrument & Manufacturing Company, Inc. received a Gold Medallion at BAE Systems’ ‘Partner2Win’ suppler symposium, recognizing its exceptional performance and commitment to operational excellence this year. Seiler’s...
Seiler Instrument & Manufacturing Co., Inc., is proud to celebrate its 80th anniversary in 2025 as a fourth-generation family business. Seiler is an Authorized Distributor for Trimble geospatial technology offering advanced survey and mapping solutions to capture, manage, and analyze high-precision data.
It is with sadness that we announce the passing of our beloved Chairman of the Board, Eric P. Seiler Sr. Eric passed away peacefully on Sunday, January 7, 2024. He was 95 years old. His loss will be felt by all of us, as he was an inspiration to everyone here at...
Our legacy of quality relies on growth, and we’re always looking for talented people to join our team. Take charge of your future and discover opportunities with Seiler.