Search results
Results from the WOW.Com Content Network
Brannock spent two years developing a simple means of measuring the length, width, and arch length of the human foot. He eventually improved on the wooden RITZ Stick, the industry standard of the day, [ 2 ] patenting his first prototype in 1925 [ 3 ] and an improved version in 1927. [ 1 ]
100 μm – smallest distance that can be seen with the naked eye; 100 μm – average diameter of a strand of human hair [25] 100 μm – thickness of a coat of paint; 100 μm – length of a dust particle; 120 μm – the geometric mean of the Planck length and the diameter of the observable universe: √ 8.8 × 10 26 m × 1.6 × 10 −35 m
A USAF 1951 resolution chart in PDF format is provided by Yoshihiko Takinami. This chart should be printed such that the side of the square of the 1st element of the group -2 should be 10 mm long. USAF 1951 Resolution Target Further explanations and examples; Koren 2003: Norman Koren's updated resolution chart better suited for computer analysis
The length of the line on the linear scale is equal to the distance represented on the earth multiplied by the map or chart's scale. In most projections , scale varies with latitude , so on small scale maps, covering large areas and a wide range of latitudes, the linear scale must show the scale for the range of latitudes covered by the map.
The even less common Rathborn system, also from the 17th century, is based on a 200-link chain of two rods (33 feet, 10.0584 m) length. Each rod (or perch or pole) consists of 100 links, (1.98 inches, 50.292 mm each), which are called seconds (″), ten of which make a prime ( ′ , 19.8 inches, 0.503 m).
Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!
Upgrade to a faster, more secure version of a supported browser. It's free and it only takes a few moments:
Ancient Roman units of length Roman unit English name Equal to Metric equivalent Imperial equivalent Notes digitus: finger: 1 ⁄ 16 pes 18.5 mm 0.728 in 0.0607 ft uncia pollex inch thumb 1 ⁄ 12 pes 24.6 mm 0.971 in 0.0809 ft palmus (minor) palm 1 ⁄ 4 pes 74 mm 0.243 ft palmus maior: palm length (lit."greater palm") 3 ⁄ 4 pes 222 mm