| 摘要 |
<p>A power tool comprises a drive shaft (16), a tool (20) for engaging a fastener (22) and marking means (30) for marking the fastener after it has been tightened. The marking means (30) comprises a marking stylus (41, 42, 45, 48, 49) reciprocable into and out of contact with the fastener, and supply means (62, 63, 61) for supplying a predetermined quantity of liquid marking medium to the stylus for discharge therefore on to the fastener with each reciprocation of the stylus.</p> |
