Cooke
Administratively speaking, Cooke Optics is a spin-off of the company Taylor-Hobson. However, Taylor-Hobson used to be a lens manufacturer and Cooke lenses used to be its sole activity before Taylor-Hobson moved to the market of metrology instruments. Hence the foundation of Cooke Optics can be regarded as the foundation of Taylor, Taylor and Hobson (TTH) in 1886, and Cooke Optics can be regarded as the successor of the original Taylor, Taylor and Hobson business.