| 摘要 |
<p>The forked end has a chamfered opening and an enlargement behind this to accept the ball end of the corresponding post, a slot extending further into the body with a transverse bolt which may provide an adjustment. Fixation of both parts is through flanged plugs with inclined ribs on their outer diameter to grip the hole into which they are inserted, a centre tapped bore accepting the fixing screw.</p> |
