Material used in jantar mantar of delhi?

The Jantar Mantar in Delhi is primarily constructed from red sandstone, a durable and locally available material.

Here's a breakdown of the materials:

* Red Sandstone: The main structure, including the walls, pillars, and instruments, is made from this.

* Marble: Some decorative elements and inscriptions might use marble.

* Metal: The instruments themselves often use various metals like brass, copper, and iron for their construction.

It's important to note that the use of these materials reflects the architectural and technological capabilities of the time the observatory was built (18th century).