Visual Measure of Petrol Tank Fullness
This page is the CodyCross answer for the clue below from Science Lab, Group 318, Puzzle 1 (Treatment Variable).
Question is: Visual Measure of Petrol Tank Fullness
and the answer is: FUELGAUGE
Word Meaning:
FUEL GAUGE — An instrument, usually mounted on an instrument panel, which indicates the quantity of fuel in the fuel tank(s).
Definitions from Wiktionary.