What astrolabe is made of
An angle-measuring instrument and analogue calculator of celestial positions.
- Astrolabe mater — has part. The main disc with a scale.
- Astrolabe plate — has part. A replaceable plate for the latitude.
- Astrolabe rete — has part. An openwork star map.
- Alidade sighting rule — has part. A sighting rule.
- Brass — is made of. Brass discs.
- Bronze — is made of. Ancient astrolabes were bronze.