| 摘要 |
<p>The drop tube mitring template (1) is standardized for such tubes with a cross-section dimension of 100 mm. The template has two guide inlets (2) at 45 degrees, through which the blade of an iron saw is fed, in order to saw the desired drop tube accurately at an angle of 45 degrees. The template at the top has a recess (3) through which it, in company with the drop tube, can be held by a hand. The template can be used with right hands and with left hands.</p> |
