btain the cross widths between thelongerons at each cross strut. Carefullyput a cut line at each end, this will enableyou to set the longeron out accurately inplan on the table, and get the correct con-tour. (See Fig. 8.) LAYING ON.Having done this, lay on one longeronand clamp it to these marks;… … 57 HOW AN AEROPLANE IS BUILTstrut, and not at the side. The centre-linemay with advantage be marked in finepencil on the longeron (cutting with a pen-knife in this case is not permissible). Having adjusted any inaccuracies, smallpieces of hard wood about 4 in. by 2 in.by 1 in. may be fixed down by…
Airplanes
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