1-50. Reference numbers indicate what about a blueprint? 1. There is a parts listed for the drawing 2. There is related correspondence to the drawing 3. There is a related drawing 4. There is additional references to standards 1-51. When scale does not appear on a drawing, you may make measurements directly from the blueprint. 1.    True 2.   False 1-52. What does the absence of a revision block on a blueprint indicate about the master drawing? 1.    The revision block has been 1.   Specifications inadvertently omitted 2.    Legends 2.    The drawing is original and has never 3.    Statements been modified 4. Bill of Materials 3.    The revision has already been incorporated into the master drawing 4.    The revision was unimportant 1-53. Where are revision blocks located on A- sized  drawings? 1.   Upper-right corner 2.   Lower-right  corner 3.   Upper-left corner 4.   Lower-left corner 1-54. Where should you look to find the larger unit or assembly drawing number on drawings that are unit parts? 1-55. To locate specific points on a complicated blueprint, what additional feature should you incorporate into the drawing? 1. Detail drawings 2. A rectangular coordinate grid 3. Zone numbers 4. Cutting plane views 1-56. What is the aeronautical equivalent in purpose to zone numbers? 1.    Assembly points 2. Rib numbers 3. Detail markings 4. Station points 1-57. You should define special marks or symbols on a drawing by using what type of note? 1-58. Where should you locate a legend? 1. Near the bill of materials 2. Above the title block 3. Under the revision block 4. Right of the assembly drawing block 1.   Left side of the bill of materials 2.   Left side of the title block 3.   Above the title block 4.   Below the revision block 6