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A section can be halved seven times in this way, down to a 5-acre (2 ha) parcel, or half of a quarter-quarter-quarter section—an easily surveyed 50-square-chain (2 ha) area. This system was of great practical value on the American frontier, where surveyors often had a shaky grasp of mathematics and were required to work quickly.
Example of a section index page. The information is organized by section, with a section relating to one square mile. Each section is presented in a two-page representation, usually by presenting the northwest quarter-section as the top half of the left page. The other quarter-sections are placed in map relationship to the northwest. [1]
Township lines run parallel to the baseline (east-west), while range lines run north–south; each are established at 6-mile intervals. Lastly, townships are subdivided into 36 sections of approximately 1 square mile (640 acres; 2.6 km 2) and sections into four quarter-sections of 0.25 square miles (160 acres; 0.65 km 2) each.
Each 36-square-mile (about 93.2 km 2) township is divided into 36 sections of one square mile (640 acres, roughly 2.6 km 2) each. [1] The sections can be further subdivided for sale. The townships are referenced by a numbering system that locates the township in relation to a principal meridian (north-south) and a base line (east-west). For ...
A clipboard is a thin, rigid board with a clip at the top for holding paper in place. A clipboard is typically used to support paper with one hand while writing on it with the other, especially when other writing surfaces are not available. The earliest forms were patented in 1870–1871 and referred to as board clips. [1]
With the advent of digital media, the concept of clipping has expanded into the digital realm. Digital clippings involve capturing and saving sections of online articles or electronic publications. Tools like Evernote, Pocket, and other web clipping services allow users to save and organize digital clippings for later use. [5]
From approximately 1947–1992, the USGS produced the 7.5 minute series, with each map covering an area one-quarter of the older 15-minute quad series, which it replaced. [1] A 7.5 minute quadrangle map covers an area of 49 to 70 square miles (130 to 180 km 2 ). [ 2 ]
It is approximately equal to the mass of a paper clip. The mass of a regular paper clip is about 1 gram. The mass of a jumbo paper clip is approximately 1.5 grams. Bob Albrecht MathBackpacks@aol.com We should avoid making contemporary comparisons like this as the weight of a paper clip will change over time.