2-13. 2-14. 2-15. 2-16. 2-17. 2-18. A standard NMCB drafting kit contains sufficient supplies and equipment to outfit a total of how many drafters? 1. Ten 2. Two 3. Three 4. Five Which of the following types of drafting media are used by SEABEE drafters? 1. Tracing paper, tracing cloth, and detail  paper 2. Tracing paper, profile paper, and cross-section paper 3. Tracing cloth, film, and tracing paper 4. Tracing cloth, tracing paper, and graph paper Compared  with  bristol  board, illustration  board  differs  in  what respect? 1. It has only one white drawing surface 2. It is thinner and less rigid 3. It comes in a smaller size 4. It cannot be used for making small  signs  and  charts Which of the following grades of pencil lead is the hardest? 1.   F 2.   HB 3. 2H 4. 4B Compared to an HB-grade pencil lead, an F-grade lead is 1. thinner  and  softer 2. thinner  and  harder 3. thicker  and  softer 4. thicker  and  harder Which  of  the  following  types  of erasers  is  best  suited  for  removing unwanted smudges from ink drawings prepared  on  tracing  vellum? 1. Vinyl 2. Pink pearl 3. Ruby  red 4. Art gum 2-19. 2-20. 2-21. 2-22. When erasing with an electric eraser,    which of the following actions should you avoid taking because of the damage that may occur? 1. Erasing  lightly  penciled  lines 2. Erasing  heavily  inked  lines 3. Erasing closely spaced lines 4. Holding the eraser steady in one spot To prevent fresh ink lines from spreading, what method should you use to prepare the surface of the drafting  medium? 1. Cover it with a film of specially  prepared  chemical 2. Rub it with fine bone dust 3. Rub it with pulverized art gum particles 4. Scrape it lightly with a steel eraser Concerning the use of drawing boards,    which of the following statements  accurately  describes  a correct procedure, method, or theory? 1. For  a  right-handed  drafter,  the working edge is the left vertical edge of the board 2. For any drafter the preferred working edge is the lower horizontal edge of the board 3. It is assumed that all edges of the  board  are  perfectly  square 4. The drawing surface of the board is  leveled  by  adjusting  the hinged   attachment Which of the following statements concerning  the  use,  testing,  or  care of the T-square is an accurate guideline,  procedure,  or  method? 1. 2. 3. 4. To draw a long continuous vertical line,    set the head of the  T-square  against  the  upper edge of the drawing board To  prevent  warpage  of  the T-square when it is not in use, hang it vertically by the hole in its blade To test a T-square, draw coinciding  lines  with  both  the top and bottom blade edges To test a T-square, draw a continuous  line  using  both vertical edges of the drawing board 10