The Theodolite
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Owner:
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kcsmiths
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Released:
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Thursday, March 26, 2015
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Origin:
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Missouri, United States
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Recently Spotted:
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In the hands of the owner.
The NCEES Surveyor Trackable
Geocachers and Professional Surveyors (P.S.) share a passion for technology and the outdoors. They both use GPS and surrounding clues to locate hidden marks or objects. But there is a difference. Professional surveyors take that passion for technology and the outdoors to a higher level and turn it into a career.
The NCEES Surveyor Trackable captures that shared passion and brings the surveying profession to life for geocachers. Once you find an NCEES Surveyor Trackable, use its unique code to log it and keep it moving by placing it in another geocache. Before you know it, it will be exploring and mapping the great outdoors just like a Professional Surveyor (P.S.).
The NCEES Surveyor Trackable photo contest has ended, as of June 1, 2015. Please continue the fun and take photos at a National Geodetic Survey (NGS) marker and share it on Facebook or Twitter using the hashtag #PSnoboundaries! Visit geocaching.com/mark to learn about locating NGS survey markers.
NCEES #PSnoboundaries PHOTO CONTEST: The NCEES Surveyor Trackable Photo Contest is solely sponsored by the National Council of Examiners for Engineering and Surveying (NCEES). Open to legal residents of the fifty (50) United States, the District of Columbia, Guam, Northern Mariana Islands, Puerto Rico, and the U.S. Virgin Islands who are 18 years and older at time of entry. Entry period for the contest commences at 12:01 a.m. (EDT) on March 17, 2015, and expires at 11:59 PM (EDT) on June 1, 2015. Void where prohibited. For details and restrictions, see Contest Official Rules on the NCEES website.
This is not collectible.
Use TB726Y9 to reference this item.
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Did you know that three of the four presidents immortalized on Mt. Rushmore were surveyors?! It's true! George Washington, Thomas Jefferson, and Abraham Lincoln were all professional land surveyors.
President Abraham Lincoln was a professional surveyor. His career as a surveyor lasted only a few years. His projects included government surveys, road surveys, town lots, and private surveys. Financially, there were difficulties and at one point his equipment was sold at auction to satisfy a debt. A farmer named John Short bought the items for $120 and returned them to Lincoln.
The instruments passed through several owners and are now on display at "Lincoln's New Salem State Historic Site".
The Theodolite is an instrument for the measurement of angles. It uses two separate circles, protractors or alidades to measure angles in the horizontal and the vertical plane. A telescope is mounted on trunnions allowing it to be aligned vertically with the target object, while the whole upper section rotates to allow horizontal alignment. The vertical circle measures the angle that the telescope makes against the vertical, known as the vertical angle. The horizontal circle uses an upper and lower plate. When beginning the survey, the instrument is aligned towards a known direction (bearing), and the lower plate is clamped into place. The instrument can then be rotated to measure the bearing to other objects. If no bearing is known or direct angle measurement is desired, the instrument can be set to zero during the initial sight and the readings will then be the angle formed between the initial object, the theodolite itself, and the item that the telescope is aligned with.
Tracking History (158957.5mi) View Map