Johnson Level & Tool Mfg. 40-6656 - Manual (Page 12)

12 ©2013 Johnson Level & Tool
5. Move the tripod so that the distance between the instrument
and staff/wall A is 0.6 Meters, and make the cross dot project
on staff/wall A. Make a mark and label as ‘A2’.
6. Rotate the instrument by 180° and move the cross dot to proj-
ect on staff/wall B. Make a mark and label as ‘B2’.
7. Calculate (A1-A2) – (B1-B2) = e
8. If e> 1.5mm, the instrument is out of tolerance and must be
calibrated.
Less than 0.6 meters
Less than 0.6 meters
7048H_Manuals 6/19/13 10:53 AM Page 12