分别采用高铬铸铁和碳素钢作为锤端和锤柄。
The cast steel and high chromium cast iron were used respectively as handle and head material of hammer respectively.
分析计算证明，采用改进后的测量方法，则可以用直角尺或线锤测量出准确的钢管管端切斜尺寸。
Analytical calculation shows that thanks to the improved measurement method, the pipe end squreness can be precisely checked by either the steel square or the wire weight.
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