measure
斠 centers on the act of measuring, especially with a tool or container. It implies careful comparison or adjustment to a standard.
斠 combines 斗 (a measuring dipper or ladle) with 冓, which likely contributes a phonetic element. The character is associated with measuring or leveling grain.
The right side 斗 is a measuring dipper, and the left side 冓 looks like a framework or container. Imagine using a dipper to measure grain from a structured bin.
For カク, picture a measuring cup with a sharp angle: the 'cack' sound of the cup hitting the table cues カク, and you measure precisely.