In the era before digital (a.k.a. glass) cockpits, a face-full of instruments are the norm. As I constantly have to remind my students in lab classes, a machine is something that produces things (including movement) while instruments measure things.
HDR Photography
In the era before digital (a.k.a. glass) cockpits, a face-full of instruments are the norm. As I constantly have to remind my students in lab classes, a machine is something that produces things (including movement) while instruments measure things.
Decaseconds 