It sounds like you found an interesting vintage or antique tool or device! From your description:
- Numbered notches → likely used for measuring, indexing, or setting specific positions.
- Rotating top plate → suggests it’s meant to rotate to align or select something.
- No obvious attachment points → could mean it’s free-standing, or meant to sit in a particular fixture or base.
A few possibilities based on flea market finds:
- Rotary dial or indexer – sometimes used in machining or woodworking to rotate a piece in precise increments.
- Old kitchen tool – e.g., a spice or coffee grinder with numbered settings, though attachment seems less likely.
- Surveying or drafting tool – a protractor-like device for angles, with the numbers for degrees.
- Game or novelty device – some old board or carnival games had rotating numbered dials.
The two-dollar price and muddy flea market origin make me lean toward it being a small mechanical tool or gadget, rather than something highly specialized.
If you can, snap a clear photo of it (top, bottom, side) and I can help identify it more precisely. The numbers and rotation mechanism are usually the biggest clue.
Do you want to try identifying it with that approach?
