The Use of Magnetic Instruments


Product Details

Product Description:



 The theme of this video will be the application of magnetic surveying instruments on original and retracement surveys. These instruments include the compass, survey compass, telescope compass, transit and other special use instruments such as the solar compass and solar transit. Special emphasis will be placed on using magnetic declination and the methods used to correct magnetic to True North. Different methods will be explained on the conversion of magnetic bearings to true bearings on retracement surveys using NOAA's on line conversion table for any year from 1650 to present. Applying the corrected survey bearing to an old retracement survey will allow you to analyze the information for correctness and accuracy.

Presented will be information on how the early history of magnetic attraction was discovered and became the compass used in astronomy, navigation, artillery, mapping and compass surveying, and the important role it played in the development of civilization. Current research by NGSinto gravity and declination and the role it plays in modern GPSadjustments. Pictures of many original instruments will be included in the Video presentation.

Course Instructor:
Mr. Milton E. Denny 

Course Length: 3 Hours, ( 0.3CEUs or 3PDHs or 3CPCs )



About the Program:

Auburn University’s Engineering Professional Development Distance Learning Series gives engineers and other licensed professionals an affordable and convenient way to earn continuing education credits (CEUs). The flexible format can be adapted for either individual or organizational use.


  • CEU -Continuing Education Unit
  • PDH -Professional Development Hour
  • CPC -Continuing Professional Competency
  • LU -Learning Units

These are measures of time and/or effort expended in coursework.  Typically, states require either PDHs or CPCs-one PDH, CPC or LUs one contact hour of instruction.  A contact hour is usually considered to be an hour spent in a classroom situation or seminar.  (We list the contact hours of each course.)  CEUSs are normally issued by educational institutions, and are one-tenth for a contact hour-or .3 for a 3-hour seminar.   So for one of our three-hour courses, we issue a certificate that grants .3 CEUs (point-3), which is convertible to  3 PDHs. 1 Contact Hour=.1 CEU=1 PDH=1 CPC =1 LU. For the courses, the CEU number is exactly one-tenth the number of contact hours—and is therefore convertible to PDHs CPCs or LUs.    (However, in every state the responsibility for determining whether or not courses will be accepted by that state rests with the licensee.  Auburn University maintains a permanent record of all CEUs granted.)

The registration fee for individual DVD/CD orders includes the course DVD-R/CD, workbook/handout, an examination covering the course content and objectives, and CEU processing costs. Only one CEU certificate will be issued per individual course order.  Successful passing of an examination (70% for PE's and LS's and 80% for architects) is required before CEU certificates may be issued. During a period of up to 1 year from the original date of purchase, exams may be submitted. The course completion date on the certificate is based on the postmark on the envelope used to return the examination to Auburn for grading. When completing the exam online, the data of completion will be the data appearing on the exam submission email.

Shipping costs included with price.

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