This microscope was the first in a series of Universal microscopes first created by Benjamin Martin in 1738. It outlined a new style of microscope that was intended to be portable and have a wide spectrum of applications.

The simple construction of this microscope allowed for a great amount of flexibility in mounting samples with respect to both vertical and horizontal observation. Central to the construction of this microscope is a threaded pillar upon which both the stage and body tube are mounted. At the top of the pillar is a ball and socket joint to which the body of the microscope is attached via a short arm. By repositioning the stage up or down on the threaded pillar, focus is achieved, and this can be accomplished with the microscope positioned at virtually any angle. At the time, this was a dramatic improvement in the versatility of portable microscopes.

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