| 摘要 |
<p>A combined graduated scale and level is used to set out the positioning of support brackets for central heating radiators. The combined scale and level has a straight base (1) into which is fitted a bubble level (2). The base (1) has a straight edge (3). The straight edge (3) is graduated in millimetres (5) and has two sets (6, 7) of reference lines. The combined scale and level can mark out simultaneously the line between two brackets and the centre-lines of the two brackets. The edge (3) is used to mark out the distance between the brackets and the reference lines (6, 7) on the straight edge (3) are used to mark out the position of the centre-lines.</p> |
