Optical microscope - OPM-1 - KERN & SOHN - for analysis / polarizing / long working distance
Amazon.com: Astell & Kern AK100II High Resolution Digital Audio Player with Extreme Audio Wall Charger, PEM11 USB Docking Station, Optical Audio Connection Kit : Electronics
Optical stereo microscope - OZM - KERN & SOHN - for quality control / for the electronics industry / binocular