_ I -a#39; _|_| l_ __ _-1 I : __-_a_a_ -a#39;s=:_a+_aApLEV/|1T/0/v a_aa_ I 1, anlla#39;lla#39;| I | E Hanging Sheet Metal Ceiling Ducts to Wood and Iron Beams: ... two shapes. It is to be noted that in this particular case it is possible to obtain elements of the conical surface which can be thus ... In making a pattern for the entire cone sufficient stretchout must be allowed to the right and left of points 2 of the pattern to equalanbsp;...
Title | : | The Sheet Metal Shop and Pattern Cutter's Magazine |
Author | : | |
Publisher | : | - 1912 |
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