2. Recording your levels – Rise & Fall Method – copy readings on a piece of paper BM –1st reading taken was 2.250 (this is a back sight) (D) Last reading taken was .486(which is a foresight) (C) 5th reading taken was 2.400( a foresight) 2nd reading taken of 2.825 (this is a intermediate site) BM C D A (B) 3rd reading taken was 1.976(which is a foresight) (C) 6th reading taken new instrument position was 1.880 (which is a back sight) B (B) 4th reading taken new position of instrument was 2.120 (which is a back sight) Now we’ll have a look at how they go onto a booking sheet Triangles indicate instrument positions Letters indicate staff positions
4. First Remember the rules for completing the booking sheet The first reading you take is always a Backsight (BS) The last reading you take is always a Foresight (FS) The readings you take in between are Intermediate sights (IS)
9. Then our instrument is moved (c.p. change point), our first reading from here is a backsight, but still goes on the line for staff reading B – etc. complete the rest
10.
11. This is simply deducting one reading from the previous and posting the answer in the rise & fall column
