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The basic design on which all modern spring tape measures are built can trace its origins back to an 1864 patent by a Meriden, Connecticut resident named William H. Bangs Jr. According to the text of his patent, Bang's tape measure was an improvement on other versions previously designed.
A measuring instrument for lengths: a typical tape measure with both metric and imperial units and two US pennies for comparison A measuring instrument is a device to measure a physical quantity . In the physical sciences , quality assurance , and engineering , measurement is the activity of obtaining and comparing physical quantities of real ...
The metre-stick is usually employed for work on a medium scale; larger than desktop work on paper, yet smaller than large-scale infrastructure work, where tape measures or longer measuring rods are used. Typical applications of metre-sticks are for building furniture, vehicles and houses. Modern carpenters' metre-sticks are usually made to be ...
Vernier caliper scales; main at top, vernier at bottom. It reads 3.58 ± 0.02 mm by adding 3.00 mm (left red mark) on the fixed main scale to vernier 0.58 mm (right red mark). The main scale reading is that to the left of the zero on the vernier scale. The vernier reading is found by locating the best aligned lines between the two scales.
A tape diagram is a rectangular visual model resembling a piece of tape, that is used to assist with the calculation of ratios and addition, subtraction, and commonly multiplication. It is also known as a divided bar model, fraction strip, length model or strip diagram.
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.
The magnetic tape is marked and cut with a blade. Adhesive tape is applied to the back side of the magnetic tape which secures the edit. Tape editing is performed simply by cutting the tape at the required point and rejoining it to another section of tape using adhesive tape, or sometimes glue; it is called a splice. The adhesive tape used in ...
A height gauge is a measuring device used for determining the height of objects, and for marking of items to be worked on. [1] These measuring tools are used in metalworking or metrology to either set or measure vertical distances; [citation needed] the pointer is sharpened to allow it to act as a scriber and assist in marking out work pieces. [1]