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(一)蓝图涂煤油晒图法这种方法,是在一机部“技术简报”上类似方法的启示下,并吸取我们一九五五年试验没有成功的教训,在领导亲自帮助下,试验成功的。作法是:在蓝图背面(我们用的是国外来的道林纸蓝图)涂上煤油,用将要涂油的蓝图擦干后,即可晒图。用将要涂油的蓝图擦,可节省煤油。这种方法,每平方米图纸,只用五分钱的煤油。但是,线条不显的图纸,需先用鸭咀笔重描,涂油后再用中华牌HB铅笔复
(A) Blueprint kerosene coating method This method is based on the revelation of a similar method on the technical briefing of a machinery department and draws lessons from our unsuccessful experiment in 1955. With the help of the leaders personally, the test was successful of. The practice is: in the blueprint on the back (we use the foreign Dowling paper blueprint) coated with kerosene, with the blueprint to be oiled dry, you can shade. Rubbed blueprints that will be oiled, saving kerosene. This method, per square meter drawings, only five cents of kerosene. However, the lines are not obvious drawings, need to use duck Tsui stroke re-painted, oiled and then use China brand HB pencil complex