🔍 Key Concepts

• Stepper motors move in discrete angular steps and are designed for precise positioning rather than continuous high‑speed rotation • Compass repeaters need accurate, repeatable angular positioning driven electrically from a master compass signal • Look for features of a multi‑pole, multi‑winding positioner (several coils or terminals, often compact and designed for fine control) rather than a simple shaded‑pole or fan‑type motor

💭 Think About

• Which pictured motor looks purpose‑built for precise angular control, not for driving a fan, pump, or blower? • Which motor shows multiple separate electrical connections or poles that could be energized in sequence to move the rotor step by step? • Which design looks like it would be mounted inside an instrument housing (a repeater) rather than bolted to a frame to drive mechanical equipment?

✅ Before You Answer

• Identify which option has multiple windings/terminals clearly visible for step‑by‑step energizing • Eliminate motors that clearly resemble simple shaded‑pole or induction fan motors with only one main coil • Consider which motor’s size and construction best match a small, precise indicator drive used inside a compass repeater