11-11. To  help  the  instrumentman  obtain accurate readings, the rodman should  take  which  of  the  following actions? 1. Clean the top of the point and the rod shoe for a good contact 2. Plumb with both hands 3. Make  sure  the  rod  graduations are right side up and facing the  instrumentman 4. All of the above 11-12. The proper care of a leveling rod includes  which  of  the  following actions? 1. Supporting the entire rod on a flat  surface  when  laying  the rod down flat 2. Rinsing any mud off with water and  cleaning  any  grease  off with a mild soap solution 3. Wiping it dry before storing it in a dry place 4. All of the above 11-13. On what basis should you select setup  points  to  balance  your  shots in  differential  leveling? 1. All setup points are at about the  same  elevation 2. Backsight  distances  are  about the same as foresight distances 3. All  backsight  distances  are about the same 4. All  foresight  distances  are about the same 11-14. You are setting up an engineer’s level on a concrete surface. You mount the instrument on a tripod placed inside a floor triangle. This  precaution  will  protect  the tripod  from  which  of  the  following accidents? 1. Turning 2. Moving laterally 3. Tipping  over 4. Collapsing IN  ANSWERING  QUESTION  11-15,  REFER  TO FIGURE 14-7 IN YOUR TEXTBOOK. 11-15. In what direction does the level vial bubble move when you turn the level screws as indicated? 1. Up 2. Down 3. Right 4. Left 11-16. The whole foot numbers on a Philadelphia  rod  are  what  color? 1. Red 2. White 3. Black 4. Yellow Figure    11A IN ANSWERING QUESTION 11-171 REFER TO FIGURE  11A. 11-17. What  is  the  target  reading? 1. 1.125  ft 2. 1.154  ft 3. 1.5     ft 4. 112.0    ft 76