Jantar Mantar - equinoctial sundial with gigantic gnomon with hypotenuse parallel to Earth's axis, in Delhi

From the archive record

Jantar Mantar in Delhi is one of the five observatories built in 1724 by the Maharaja of Jaipur - Sawai Jai Singh II for the pursuit of scientific knowledge. A tour of Delhi would be incomplete without a look at this spectacular observatory that bears witness to the thirst for scientific knowledge in Indians from an early age. The observatory of Jantar Mantar in Delhi is a camouflage of modern art. ‘Samrat Yantra' or the sun dial is the most imposing instrument in the observatory. The sun dial is a huge structure in yellow with a 27m long arm placed at an angle of 27 degrees. The sun dial calculates the time of a day accurately. There are two pillars that record the longest and shortest day in the year. This instrument is known as the ‘Mishra Yantra' the other instruments are used to tra