That sounds like a classic “mystery flea market tool” — and your clues actually narrow it down quite a bit.
From your description:
- numbered notches
- rotating top plate
- no obvious mounting/attachment
…it’s very likely one of these:
🧰 1. Mechanical measuring / indexing tool
Could be an old:
- angle divider
- spacing tool for crafts/woodwork
- drafting or layout device
The numbered notches often help set equal spacing or angles.
🍰 2. Vintage kitchen slicer / portion guide
Some older tools used a rotating dial to:
- set slice thickness
- portion dough, pastry, or cake
- guide cutting spacing
These often look “incomplete” because they were meant to sit inside a larger frame.
🧵 3. Sewing or textile marking tool
Certain vintage tailoring tools had:
- numbered settings for seam spacing
- rotating heads to mark fabric evenly
These also sometimes don’t obviously “attach” unless you had the full workstation piece.
⚙️ 4. Part of a larger machine (most likely)
A strong possibility is:
it’s a detached component from a bigger device
Examples:
- old typewriter / calculator dial mechanism
- industrial machine counter
- farm or workshop equipment dial
The rotating plate suggests it was meant to adjust settings, not function alone.
🔍 Quick way to identify it
If you want a precise ID, tell me:
- material (metal / plastic / wood?)
- diameter
- any markings, logos, or numbers
- photo (best option)
If you upload a picture, I can usually pinpoint these flea market mysteries pretty accurately.
