Two Microscopes, late19th/early 20th century, one a small student microscope with draw focusing and pillar-mounted mirror, ht. 6; the other a boxed micrometer for thread counting retailed by Charles L
Two Microscopes, late19th/early 20th century, one a small student microscope with draw focusing and pillar-mounted mirror, ht. 6; the other a boxed micrometer for thread counting retailed by Charles Lowinson, New York, wd. 3 3/4 in.