I had an appointment with my optometrist last week, and when I was shown into the examination room, I noticed this box was tucked into the corner.
Pediatricians often have toys and stuffed animals in their offices to make their young patients feel more comfortable. It seems entirely appropriate that my doctor has an instrument built into a Tektronix 620 monitor on display. Nothing puts me at ease quite like a dose of Tektronix blue!
(Unfortunately, I didn't get a chance to ask the doctor what the instrument measured. Maybe next year!)