Fuse vs. lamp

These miniture lamps are almost the same size as a standard glass fuse, and light up the VU meters of my vintage JVC cassette deck. One was burned out when I found the deck and I finally dug into it to replace the lamps.

BTW, years ago I put an actual fuse across the terminals of a 6v lantern battery and it glowed like a lamp for a good 10 seconds or so before blowing.