• Home
  • Download PDF
  • Order CD-ROM
  • Order in Print
MAINTENANCE AIDS
Figure 1-5-A.Standard lines

Aviation Boatswains Mate E - Aviation theories and other practices
Page Navigation
  1    2    3    4  5  6    7    8    9    10  
diameter, around the dash number, and carry a leader line to the part. A dash and number are used to identify modified or improved  parts,  and  also  to  identify  right-hand  and left-hand parts. Many aircraft parts on the left-hand side of an aircraft are exactly like the corresponding parts on the  right-hand  side  but  in  reverse.  The  left-hand  parts are usually shown in the drawing. Above the title block on some prints you may see a notation  such  as  "159674  LH  shown;  159674-1  RH opposite."  Both  parts  carry  the  same  number.  But  the part called for is distinguished by a dash and number. (LH means left-hand, and RH means right-hand.) Some companies  use  odd  numbers  for  right-hand  parts  and even numbers for left-hand parts. Drawing Lines The lines used in working drawings are more than a means of showing a picture of an object for the purpose of building or repairing. The way a line is drawn has a definite meaning. Thick  lines  are  used  for  the  visible  outline  of  the object  being  drawn.  Medium  lines  are  used  for  the dotted   lines   representing   hidden   features   and   for cutting-plane, short-break, adjacent-part, and alternate-position  lines.  Center  lines,  dimension  lines, long-break   lines,   ditto   lines,   extension   lines,   and section lines are represented by thin lines. To  understand  blueprint  reading,  you  must  know the  different  types  of  lines  used  in  general  drawing practice and the information conveyed by each. Some of   the   lines   of   major   importance   are   illustrated   in 1-5 Figure 1-4.—Blueprint title blocks. (A) Naval Ship's Systems Command; (B) Naval Facilities Engineering Command.







Western Governors University

Privacy Statement
Press Release
Contact

© Copyright Integrated Publishing, Inc.. All Rights Reserved. Design by Strategico.