The following describes a method for obtaining level using the MU-9000X and the MU-1800I:
Because the AeroPerfect Digital Control Throw Meter can be set for any zero reference angle, relative measurements can be made on your aircraft without having to reference level (e.g., decalage). However, if desired, the AeroPerfect models listed above can also be used as a level. Here are two methods for obtaining level:
Method One
Step 1:
Simply place the MU-1800-I onto a trusted, bubble-type level.
Step 2:
Move your level until it reads level. While holding it at that position press the AP3 Zero Button. You have now calibrated your AeroPefect for level.
Method Two
Step 1:
Simply place the MU-1800-I on a flat surface so that the insignia is facing you. Press the AP3 zero button.
Step 2:
Turn the MU-1800-I 180 degrees (insignia facing away from you) and note the reading on the AP3 Display. Divide that reading in half and write it down.
Step 3:
Using a few sheets of paper as shims, slip them under the edge of the measuring plate to obtain the number you wrote down at the end of step 2. Press the AP3 Zero Button.
You have now calibrated your AeroPefect for level. You can double check the calibration by comparing measurements with the MU-1800-I "insignia facing away" and "insignia facing towards you. You should read the same angle positive (+) as you do negative (-). If the surface on which it sits is truly level, you will read zero in both directions.
For technical questions you may have regarding the AeroPefect, please contact us at questions@aeroperfect.com.
HAPPY FLYING!