This object is an antique brass drum microscope (also frequently referred to as a pocket field microscope or barrel microscope), dating from the late 19th to early 20th century (typically the Victorian or Edwardian eras).
Designed for portability, these instruments were favored by students, naturalists, and medical field workers who needed a compact tool they could carry in a coat pocket. Focusing is achieved simply by sliding the nested brass draw-tubes manually in and out.
Selling item for my family. It was owned by a deceased relative.
Make me an offer.
Cash Only.
Pickup Only.
My zip code is 80015 - I'm in Aurora by Cherry Creek State Park -- off Parker near Chambers.