About Amerisurv| Contact    
Magazine | Newsletter    
Flickr Photos | Advertise    
HomeNewsNewsletterAmerisurv DirectoryJobsStoreAuthorsHistoryArchivesBlogVideosEvents

Sponsored By

Software Reviews
Continuing Series
An RTN expert provides everything you need to know about network-corrected real-time GNSS observations.
Click Here to begin the series,
or view the Article PDF's Here
76-PageFlip Compilation
of the entire series
Test Yourself

Got Answers?
Test your knowledge with NCEES-level questions.
  Start HERE
Meet the Authors
Check out our fine lineup of writers. Each an expert in his or her field.
Wow Factor
Sponsored By

Product Reviews
Partner Sites







Spatial Media LLC properties




Home arrow Archives   The American Surveyor     

The HP 35s Calculator—A Field Surveyor's Companion: Part 9—Intersections Print E-mail
Written by Jason E. Foose, PS   
Thursday, 04 June 2015

A 141Kb PDF of this article as it appeared in the magazine—complete with images—is available by clicking HERE

e can calculate anything and everything under the sun or the dismal grey Cleveland skies of FirstEnergy Stadium, however, a decision to set aside previously fixed local survey legal subdivision corners must be supported by evidence that goes beyond mere demonstration of technical error, reasonable discrepancies between former and new measurement, and less than strict adherence to restoration and subdivision rules. Were (we) obliged to open the question as to the location of a particular tract or tracts over technical differences or reasonable discrepancies, controversies would constantly arise, and resurveys and readjudication would be interminable. The law gives these activities repose.

"Oh, what's this pile of meadow muffins?" you say. Well, save the dismal grey nonSuperbowl rubbish, it is a direct quote from the summary of Chapter III section 137 of the 2009 BLM Manual of Instruction located on page 74. The instructions to establish the center of section in the vacuum of title known as the public domain are clearly acknowledged as being out of character in the fruited and colorful non-federal arena. Where States like Colorado have provided the Manual of Instruction as a statutory reference (CRS 38-51-103.1) they cite "such professional land surveyor shall proceed according to the applicable rules contained in the current "Manual of Instructions for the Survey of the Public Lands of the United States" published by the United States..." rather than "Place the center one-quarter corner in accordance with Chapter III Section 114 of the Manual of Instruction". The States and their Honorable Courts understand that the Manual contains a set of instructions defining the act of subdividing lands gestating within the prenatal title of a sovereign. The fabric of the non-federal arena is on the other hand a series of bona fide conveyances referencing protracted division lines within a section. The weight of conveyancing coupled with occupation and local surveys is wholeheartedly acknowledged in numerous places throughout the 2009 Manual. So, before you open up to page 68 and intersect those straight lines to fire another salvo into the center quarter, remember that retracement surveying is an evaluation of evidence, not a pop quiz in geometry class. Consequently "intersection" is a tool not an answer!

Please do not hesitate to send any comments, concerns, questions, or criticism to This e-mail address is being protected from spam bots, you need JavaScript enabled to view it

This Month's Program
Program L: Intersections includes routines for Direction/Direction, Direction/ Distance, and Distance/Distance. The program operates by assuming a base line from the first point to the second point. Direction/Distance and Distance/Distance naturally have 2 solutions. The preferential solution may be defined as being left or right of the line facing the second point.

This month we will focus on Azimuth/ Azimuth(Direction/Direction) and create the curve referenced in the AREA program installment. The Direction/Distance and Distance/Distance examples will follow next month. I encourage all readers to try the routines preemptively and send feedback. I promise a speedy response and I'll do my best to include your comments in the next installment. I think the good folks of the campus bookstore bevy refer to that as "an interactive reader experience".

Example Data and Running The Program
If you have carried coordinates through from the compass rule adjustment article you may find insignificant differences in solutions as noted in the last month's area listing. The source of the error is the difference between hand entering coordinates to two decimal places versus the computed (adjusted) values that are carried out to the full 12 digit precision of the HP 35s. This is a great example toward accepting tolerance in measurement through the assessment of the source data. The amount of these differences is insignificant, however the reason they exist must be identified before considering the impact. I will be reporting will the 2 decimal coordinates listed above.

Jason Foose is the County Surveyor of Mohave County Arizona. He originally hails from The Connecticut Western Reserve Township 3, Range XIV West of Ellicott's Line Surveyed in 1785 but now resides in Township 21 North, Range 17 West of the Gila & Salt River Base Line and Meridian.

A 141Kb PDF of this article as it appeared in the magazine—complete with images—is available by clicking HERE

< Prev   Next >

 American Surveyor Recent Articles
Thought Leader: Land is Too Important to Be Left to Land Specialists
A while back I was searching the Internet for an old treatise on land titles. A Google query yielded a book published in 1914. The author was Charles Claudius Kagey and the book was titled "Land Survey and Land Titles, a book for boys and girls, a reference volume for property owners, a text ....
Read the Article
Jason E. Foose, PS 
Decided Guidance: Wacker vs. Price - Irony in Sevenfold
This month's case takes us to Phoenix, Arizona in 1950. The Arizona Supreme Court went all guns-a-blazin' in Wacker vs. Price (216 P.2d 707 (Ariz. 1950)). Maybe it's just me, but I'm sensing plenty of irony and have taken license to point it out along the way. I like what the Court did with this case ....
Read the Article
Allen E. Cheves 
Around the Bend - A Visit to Carlson Software
The Ohio River is one of America's greatest, running near 1,000 miles between Pittsburgh and the Mighty Mississippi. Much of the coal and other products that fueled our nation's industrial expansion flowed between the shores of this maritime ....
Read the Article
Lee Lovell, PS 
Surveying & Mapping Economics Part 3 - Customers & Services
This article continues an inquiry into the economic conditions of the Surveying and Mapping industry (NAICS 541370) using data from the U.S. Census Bureau. This time we will look at customers and services. The data comes from the Economic Census conducted every 5 years on American ....
Read the Article
Jerry Penry, PS 
True Elevation: Black Elk Peak
Black Elk Peak, located in the Black Hills region of South Dakota, is the state's highest natural point. It is frequently referred to as the highest summit in the United States east of the Rocky Mountains. Two other peaks, Guadalupe Peak in Texas and ....
Read the Article
Larry Trojak 
Bringing The Goods - Mobile Scanning an Integral Component
When Jim Smith, Jerrad Burns and Charlie Patton left the Memphis division of a major construction company in 2015, they took with them the knowledge of how to get even the most complex jobs done and what equipment could best serve them in making that happen. So when they joined West ....
Read the Article
Lee Lovell, PS 
Test Yourself 41: Integers, Integers, and Integers
ABF is a 5:12:13 triangle, ACF is a 48:55:73 triangle, ADF is a 3:4:5 triangle, and AEF is a 7:24:25 triangle, all with integer sides and inscribed in a semi-circle. What are the lengths of BC, CD, and DE? ....
Read the Article
Wendy Lathrop, PS, CFM 
Vantage Point: Sunset or Sunrise?
While we often think of legislated government programs as static, they do change over time. Such evolution and opportunity for transformation are part of the dialogue in reauthorizing these programs. Every so many years there is a sunset on each government program, and this September is the ....
Read the Article


Amerisurv Exclusive Online-only Article ticker
Featured Amerisurv Events
List Your Event Here
contact Amerisurv


JAVAD Intros
Spoofer Buster

press [at] amerisurv.com
Online Internet Content


News Feeds

Subscribe to Amerisurv news & updates via RSS or get our Feedburn
xml feed

Need Help? See this RSS Tutorial

Historic Maps

post a job
Reach our audience of Professional land surveyors and Geo-Technology professionals with your GeoJobs career ad. Feel free to contact us if you need additional information.


Social Bookmarks

Amerisurv on Facebook 

Amerisurv LinkedIn Group 

Amerisurv Flickr Photos 

Amerisurv videos on YouTube 



The American Surveyor © All rights reserved / Privacy Statement
Spatial Media LLC
905 W 7th St #331
Frederick MD 21701
301-695-1538 - fax