Micrometer
device · 1848 · Industrial Revolution
A measuring tool built on a precise screw (Palmer).
Inventors: William Gascoigne, Christiaan Huygens, Adrien Auzout.
What it is made of
- Shackle — has part. A rigid frame.
- Precision micrometer screw — has part. A 0.5 mm pitch.
- Ratchet stop — has part. It limits the measuring force.
- Micrometer thimble with scale — has part. Hundredths of a millimetre.
Principles and materials it uses
- Screw — uses. A precise screw with a 0.5 mm pitch.
- Brass — is made of. Palmer’s micrometer is brass and steel.
Where it is used
- Interchangeable parts — is used in. Precise measurement ensures interchangeability.
History: what it evolved from and what it influenced
- Vernier caliper — evolved from. A more precise instrument.