tripodal frame; tripod
A three-legged support structure, often used for cameras, surveying equipment, or other apparatus.
測量士は三脚架にトータルステーションを設置した。
The surveyor set up the total station on the tripod.
Compound of 三 (three), 脚 (leg), and 架 (frame, rack). The exact historical derivation is uncertain, but the word transparently describes a three-legged frame.