Achromatic Loupe - 20x - 15mm diameter - metal case foldout type. An achromatic lens (or achromat) is designed to limit the effects of chromatic and spherical aberration. It is corrected to bring two wavelengths (typically red and blue) into focus in the same plane.
Forensics Lab Supply Number 3540308.
Formerly Grau-Hall Corporation dba Grau-Hall Scientific.
Optical Microscoy Primer