Picked this up at a muddy March flea market for two dollars. It has numbered notches and a rotating top plate, but no obvious way to attach it to anything. What is this thing?

planter’s seed dispenser, ensuring consistent application. This precision was vital, as different crops required different planting densities for optimal growth. The seed dial was an early example of precision agriculture, helping to improve efficiency and yields long before the advent of modern technology.

Each notch on the seed dial corresponded to a specific setting, often marked by a number or symbol. These notches were carefully calibrated to match common seed sizes and planting requirements.

Understanding the notches required familiarity with the specific dial’s design, as manufacturers often had their own systems. However, a common approach was to use larger numbers for larger seeds or greater planting depths, providing a logical and intuitive way for farmers to use the tool effectively.

Seed dials varied widely depending on their intended use, the manufacturer, and the