Byrne & Schaefer Inc. is a leading engineering and manufacturing company located in Lockport, IL, serving Will County and the surrounding Chicagoland area since 1949. We specialize in low-inductance resistors, custom and specialty resistors, and industrial-grade electrical components and assemblies for demanding applications. With decades of experience, precision manufacturing, and a commitment to quality, Byrne & Schaefer Inc. delivers reliable, custom electrical solutions for industrial and commercial clients. Open Monday through Friday by appointment only.