測る
はかる · hakaru · JLPT N3 · verb-godan
to measure
📏⚖️ 測 = 氵 water + 則 rule: measuring water depth with a rule
則 means rule or standard, and the water radical 氵 points to its old use: checking how deep water runs. Hakaru has three spellings. 測る is for length, depth and height, 量る for weight and volume, and 計る for time.