Hand-cranked egg beaters (which looked like a wheel with two whisks) were a staple before electric mixers. Flour sifters with a crank handle were also standard for baking.
For Pastry & Baking:
Pastry crimpers or jaggers used to cut and seal pie crusts, pie funnels (little ceramic chimneys used inside pies to let steam escape), and pastry blenders (tools with a handle and blades for cutting butter into flour) were very common.
For Salads & Fruit:
Glass lemon squeezers are iconic, and egg slicers with wire cutting frames were also very popular.
For Storage & Preservation:
Enamelware in various colors, glass canning jars, and aluminum milk pots were part of everyday life.
If the tool in the photo looks like it has a handle or crank, a hand-cranked egg beater or a meat grinder are strong possibilities. If it’s a small, flat tool with a curved edge, it could be a pastry crimper or a jigger.
If you can describe what the tool looks like—its material, shape, or how it’s used—I can narrow it down further!