Red Slate Specimen Chemical_N-Butyl Alcohol Binocular compound microscope spans 40-400X

Binocular compound microscope spans 40-400X with achromat objectives and a mechanical stage for introductory biology and histology coursework

Unusual double-concave glass disc on a 125mm spinning base

packaged with a keeper that bridges the poles to keep the field intact between sessions

Expansion adapter in borosilicate 3

Used as the red-rail partner to the 150mm black 4mm-stackable lead

Red Slate Specimen Chemical_N-Butyl Alcohol Binocular compound microscope spans 40-400XRed hematite stained slate cleaves into flat sheets used historically for roofing, illustrating low grade metamorphism of iron rich shale protolith.