Movable vise jaw and telescope: what they have in common

1. Step 1. Movable vise jaw — is part of — Vice. It clamps the part.
2. Step 2. Vice — uses — Screw. The jaws are closed by a screw.
3. Step 3. Screw — is used in — Worm gear. The worm is a screw.
4. Step 4. Worm gear — is made of — Bronze. Worm gears are bronze.
5. Step 5. Bronze — is material for — Reflecting telescope. Newton’s mirror was made of speculum metal.
6. Step 6. Reflecting telescope — is a kind of — Telescope. A telescope.

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