The Jones brothers made a number of popular microscope models including the "Improved" and "Most Improved" brass compound microscopes, two of which are illustrated below.
(The Jones brothers; made; a number of popular microscope models including the "Improved" and "Most Improved" brass compound microscopes) (two of which; are illustrated below; )
The Jones brothers two of which
made are illustrated below
a number of popular microscope models including the "Improved" and "Most Improved" brass compound microscopes