Vintage kitchen utensil -- any idea what this might be
Sorry, you can't see the photo very well on here -- up along the center are multiple lines, labeled "eggs," and each line (moving from bottom to top) says 1-2, 3-4, 5-6, then starts over again. Each section of lines (moving from bottom to top) is then labeled "very soft," "soft," and "medium"
re: Robin Joy
Robin's right. Wow, I must be getting old if this is "vintage." We had one when I was growing up in the late 50's. The different numbers and the water lines are for the number of eggs you're boiling (and the degree of hardness). The whistle either goes off when they're done or when they get to the boiling point, then you need to turn down to simmer.
Works pretty well, IIRC.