20TH CENTURY DIP NEEDLE
The dip needle of this kind of compasses measures vertical magnetic inclination.
Type of object:
Timekeeper & Sundial & Compass & Barograpf
Time period:
Ontdekkingsreizigers 19de eeuw of later
Place:
UK
Date:
1905
Maker / Author:
Admiralty
Publisher / Printer:
n/a
Dimensions:
26.5 cm high
Material:
silvered scale swivel-mounted in wooden chamber with bevelled glass panels, bubble level and adjustable feet
Graduation:
0-360°
Inscription:
Admiralty sign on bottom
Provenance:
n/a
References:
See educational explanation of the use of this dip needle:
https://www.toppr.com/ask/content/story/amp/dip-circle-15050/
Description
Dip-needle compass, unsigned, with silvered scale swivel-mounted in wooden chamber with bevelled glass panels, bubble level and adjustable feet – 10½in. (26.5cm.) high
Dip circles (also dip needles) are used to measure the angle between the horizon and the Earth's magnetic field (the dip angle). They were used in surveying, mining and prospecting as well as for the demonstration and study of magnetism.
Additional information
