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9. FACE THE ROD. To give this signal, the
instrumentman extends both arms upward to
indicate to the rodman that the leveling rod is
facing in the wrong direction. 10. REVERSE THE ROD. The instrument-man gives this signal by holding one arm upward and the other downward, and then reversing their positions with full sidearm swings. 11. BOOST THE ROD. The instrumentman gives this signal by swinging both arms forward and upward, palms of the hands upward. This signal is used when the instrumentman wants the leveling rod raised and held with its bottom end at a specified distance, usually about 3 ft, above the ground. 12. MOVE FORWARD. The instrumentman gives this signal by extending both arms out horizontally from the shoulders, palms up, then swinging the forearms upward. 13. MOVE BACK. The instrumentman gives this signal by extending one arm out horizontally from the shoulder, hand and forearm extended vertically, and moving the hand and forearm outward until the whole arm is extended horizontally. 14. UP OR DOWN. The instrumentman gives this signal by extending one arm out horizontally from the shoulder and moving it upward or downward. This directs the rodman to slide the target up or down on the rod. 15. PICK UP THE INSTRUMENT. The party chief gives this signal by imitating the motions of picking up an instrument and putting in on the shoulder. The party chief or other responsible member of the party gives this signal, directing the instrumentman to move forward to the point that has just been established. 16. COME IN. The chief of party gives this signal at the end of the days work and at other times, as necessary. Two additional hand signals are shown in figure 12-2. Their meanings are given in the next two paragraphs. RAISE FOR RED. The instrumentman gives this signal in a leveling operation to ascertain the immediate whole-foot mark after reading the tenths and hundredths of a foot. This usually happens when the rodman is near the instrument or if something is in the way and obscures the whole-foot mark. EXTEND THE ROD. The instrumentman gives this signal when there is a need to extend an adjustable rod. This happens when the height of the instrument becomes greater than the standard length of the unextended adjustable level rod.
Figure 12-2 .-Additional hand signals. SIGNALS FOR NUMERALS. Figure 12-3 shows a simple system for numerals. ONERight arm extended diagonally down to the right from the body TWORight arm extended straight out from the body THREERight arm extended diagonally up and out from the right shoulder FOURLeft arm extended diagonally up and out from the left shoulderFIVELeft arm extended straight out from the bodySIXLeft arm extended diagonally down to the left from the bodySEVENBoth arms extended diagonally down and out from the body
Figure 12-3.-Hand signals for numerals. EIGHTBoth arms extended straight out from the body NINEBoth arms extended diagonally up and out from the body ZEROHitting the top of the head with an up-and-down motion of the palm A decimal point should be indicated by using a signal that maybe easily distinguished from the other signals. Make sure to orient yourself properly when receiving signals for Number 1 through Number 6; your left is the right of the signalman. The other numerals can be read without thinking of right or left. Use numeral signals only when necessary. Mistakes can easily result from misinterpreted signals. It is important to remember that, if hand signals are used, they should be used consistently. It is important that every member of the survey party be completely familiar with them. |
 
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