Then I learned how to use the tools of masonry: hammers, chisels, the compass, and the set square.

然后我学会了如何使用石工工具：锤子、凿子、圆角板。

The set square helps me make sure the walls I build are straight and true, so that my corners form ninety-degree angles.

角板帮助我确保我建造的是直的真实的，这样我的角就会十度角。

They were poking him with rulers, hitting him in the face with chestnut shells, and were making him out to be a cripple and a monster, by mimicking him, with his arm hanging from his neck.

有的用角板打他，有的把栗子壳向他的头上投掷，说他是“残废者”，是“鬼怪”，还将手挂在项颈上装他的样子给他看。