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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
In addition these devices can remain on the specimen until failure and measure very high extensions (up to 1000 mm) without losing any accuracy. These devices typically have resolutions of 0.3 μm or better (the highest quality devices can read values as low as 0.02 μm) and have sufficient measurement accuracy to meet class 1 and 0.5 of ISO 9513.
Brannock Device: measuring shoe size breathalyzer: breath alcohol content caliper: length calorimeter: heat of chemical reactions cathetometer: vertical distances ceilometer: height of a cloud base chronometer or clock: time clap-o-meter: volume of applause compass: direction of North Coulombmeter: electrostatic charge of a material colorimeter ...
Pages in category "Length, distance, or range measuring devices" The following 60 pages are in this category, out of 60 total. This list may not reflect recent changes .
A variety of rulers A carpenter's rule Retractable flexible rule or tape measure A closeup of a steel ruler A ruler in combination with a letter scale. A ruler, sometimes called a rule, scale or a line gauge or metre/meter stick, is an instrument used to make length measurements, whereby a length is read from a series of markings called "rules" along an edge of the device. [1]
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The Birmingham gauge ranges from 5/0 or 00000, the lowest gauge number corresponding to the largest size of 0.500 inches (12.7 mm), to 36, the highest gauge number corresponding to the smallest size of 0.004 inches (0.10 mm). The increments between gauge sizes are not linear and vary. [2] At higher gauge numbers, the increment between the two ...
The basic idea behind a transit-time measurement of length is to send a signal from one end of the length to be measured to the other, and back again. The time for the round trip is the transit time Δt, and the length ℓ is then 2ℓ = Δt*"v", with v the speed of propagation of the signal, assuming that is the same in both directions.