A warrior holding and looking through a telescope in a wall carving in Hoysaleshwara Temple, Halebidu, Karnataka showing a war. Long before Hans Lippershey is said to have invented it in 1608.
What an ignorant statement!
There are hundreds of Sanskrit inscriptions that predate Guptas. A few examples are Ayodhya inscription of Dhana dating back to 1st Century BC, Hathibada Ghosundi inscrriptions of Sarvatata dating back to 2nd Century BC, Mathura inscription of Sodasa