Diatom slide and micrometer scale as imaged using Objective No. 8 with eyepiece No. 1.
Diatom slide and micrometer scale as imaged using Objective No. 2 with eyepiece No. 1.
Diatom slide as imaged using Objective No. 5 with eyepiece No. 1. Contrast was so low that the micrometer scale was not visible.