dumpy-level
n. தொலைநோக்கியுல்ன் மட்டத்தொடர்பில் இணைக்கப்பட்ட அளவாய்வாளரின் காட்சித்தள மட்டம்.
Dump"y lev"el. (Surv.) Defn: A level having a short telescope (hence its name) rigidly fixed to a table capable only of rotatory movement in a horizontal plane. The telescope is usually an inverting one. It is sometimes called the Troughton level, from the name of the inventor, and a variety improved by one Gavatt is known as the Gavatt level.