It claims to produce 5,000 variations of precision tools, gauges, measuring instruments and saw blades as of 2025.

The company patented such items as the sliding combination square, bench vises, and a shoe hook fastener.

[6] During the same year Starrett began making and improving saw blades, and continues to be a major manufacturer as of 2015.

[7] In 1920, the company added its first gauge to the product line and quickly became the world's largest innovator and maker of precision calibrators.

Starrett Co. purchased Tru-Stone Technologies Inc. in Waite Park, Minnesota, a maker of custom-engineered granite machine bases, for $19.8 million in cash.

[12] In March 2024, with Douglas A Starrett as its President and CEO, the company announced that it would be acquired by private equity firm MiddleGround Capital.

[13] On June 5, 2024, L. S. Starrett Co. announced that it had completed a merger with an affiliate of MiddleGround and became a privately held company.