get the measure of (someone or something)
To understand or know someone or something well and use that knowledge accordingly; to have an accurate conception of someone or something. I've gotten the measure of the students, and I just don't think that topic will hold their interest at an assembly.
have the measure of (someone or something)
To understand or know someone or something well and use that knowledge accordingly; to have an accurate conception of someone or something. I have the measure of the students, and I just don't think that topic will hold their interest at an assembly.
take the measure of (someone or something)
To evaluate someone or something; to judge the qualities of someone or something. Every year I have an informal day of classes so I have a chance to take the measure of my kids.