Lyman Products Corporation is a company that specializes in the manufacturing of reloading equipment, gunsmithing tools, and shooting accessories. The company was founded in 1878 by William Lyman, and is considered to be one of the oldest and most respected manufacturers of reloading equipment in the world.

In the early days, the company focused mainly on producing reloading tools and equipment for black powder firearms. They produced items such as bullet molds, reloading presses, and other reloading accessories.

In the early 1900s, the company expanded its product line to include reloading equipment for smokeless powder firearms. They introduced the first production-line reloading press, the "Lyman Ideal Press" which was widely accepted and used by reloaders.

In the 1960s, Lyman introduced the "Tru-Line Jr." reloading press, which was a simple, easy-to-use reloading press that was designed for novice reloaders. This press was a great success and helped to introduce many new people to the hobby of reloading.

Throughout the years, Lyman has continued to innovate and improve its reloading equipment and has introduced new products such as electronic scales, powder measures, and other reloading accessories.

Today, Lyman is considered to be one of the leading manufacturers of reloading equipment in the world, and their products are widely used by competitive shooters, high-volume reloaders, and gunsmiths. They have a reputation for producing high-quality, durable reloading equipment that is backed by excellent customer service and support.