Bent Hammer Handles
研究了锤子手柄的不同弯曲角度，发现5到10度的小弯曲效果最佳，对工具设计者和人机工程学研究者有参考价值。
The literature suggests that when a tool, gripped with a power grip, has its working part extend above the hand, then a curve in the handle may be beneficial. Three experiments investigated different angles for hammer handles. A small bend (5 to 10 deg) seems best.