Complex sentence: In the industrial age, composing sticks were manufactured by many companies, but notably in America by the H. B. Rouse company, which made composing sticks that were adjustable to the half pica, as well as a stick containing a micrometer that was infinitely adjustable.
Split into simpler sentences: In the industrial age, composing sticks were manufactured by many companies, but notably in America by the H. B. Rouse company. They made composing sticks that were adjustable to the half pica, as well as a stick containing a micrometer that was infinitely adjustable.