🛠️ Invention or technique

Kelvin compass (light card with multiple needles)

Compás de Kelvin (rosa ligera con agujas múltiples)

Date
1876 · confidence high
Place
Glasgow, Scotland, United Kingdom
Credited to
William Thomson (Lord Kelvin)
Field
Movement

What it is

A compass with a very light card, several small needles and soft-iron spheres compensating the ship's deviation. Steadier in a seaway than older models and suited to iron ships.

What it led to

  • the standard compass of iron and steel ships
  • better steering in bad weather
  • modern Admiralty magnetic compasses
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Sources✓ verified 2026-11-06