Quantcast Section VI: MAINTENANCE PROCEDURES

 

Click here to make tpub.com your Home Page

Page Title: Section VI: MAINTENANCE PROCEDURES
Back | Up | Next

Click here for thousands of PDF manuals

Google


Web
www.tpub.com

Home


   
Information Categories
.... Administration
Advancement
Aerographer
Automotive
Aviation
Construction
Diving
Draftsman
Engineering
Electronics
Food and Cooking
Logistics
Math
Medical
Music
Nuclear Fundamentals
Photography
Religion
   
   

 

Share on Google+Share on FacebookShare on LinkedInShare on TwitterShare on DiggShare on Stumble Upon
Back
Section V: TROUBLESHOOTING
Up
TM-5-6675-329-13-P Self-Leveling Surveying Level (Wild Heerbrugg Model NA2-80) NSN
Next
Horizontality of the Line of Sight
TM 5-6675-329-13 & P
Section VI: MAINTENANCE PROCEDURES
4-10 GENERAL
a.
Circular Level (8, Figure 1-2)
The Tripod Assembly with Automatic Level NA2 attached, is set up on firm ground.  Using the three
footscrews (2, Figure 1-2), the bubble is centered exactly in the middle of the setting circle. The instrument is now
rotated through 180". If the bubble is displaced so that it no longer lies within the setting circle, it should be adjusted.
When doing this, the bubble's glass cover must not be touched with the finger. Half of the bubble displacement is taken
out with the footscrews and the other half with the two adjustment screws (Figure 4-1) using the adjusting pin kept in the
Carrying Case NA2-80. As an adjustment screw is tightened the bubble runs towards it and, as it is loosened, the bubble
runs away from it. The first adjustment screw to be turned, therefore, is the one that is the nearest to being in line with
the middle of the bubble and the center of the setting circle. It is turned only until the bubble reaches the center of the
circle or until it can be set in the center by means of the other screw. The screws must not be turned more than is
necessary to complete the adjustment.
Figure 4-1. Adjusting the Circular Level
4-8

Privacy Statement - Press Release - Copyright Information. - Contact Us

Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business