Anchor and atomic clock: what they have in common

1. Step 1. Anchor — is part of — Sailing ship. An anchor.
2. Step 2. Sailing ship — has part — Sextant. The sextant and chronometer were a sailing ship’s navigation kit for finding latitude and longitude.
3. Step 3. Sextant — works like — Star tracker. Navigating by the stars — as sailors did.
4. Step 4. Star tracker — is part of — Artificial satellite. A star tracker.
5. Step 5. Artificial satellite — is part of — GLONASS. Satellites.
6. Step 6. GLONASS — uses — Atomic clock. Atomic clocks.

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