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A diameter tape (D-tape) is a measuring tape used to estimate the diameter of a cylinder object, typically the stem of a tree or pipe. A diameter tape has either metric or imperial measurements reduced by the value of π. This means the tape measures the diameter of the object. It is assumed that the cylinder object is a perfect circle.
Make your life easier with a tape gun. An essential item for any work space or home, tape guns make sealing boxes a simple task. Invented in 1932 by an engineer at the 3M Company (which remains ...
Box-sealing tape, parcel tape, packing tape, or shipping tape is a pressure-sensitive tape used for closing or sealing corrugated fiberboard boxes. It consists of a pressure-sensitive adhesive coated onto a backing material which is usually a polypropylene or polyester film which is oriented to have strength in both the long (machine) direction ...
Cap guns get their name from the small discs of shock-sensitive explosive compounds (roughly 1.4 to 1.6 millimetres (0.055 to 0.063 in) in diameter) that provide the noise and smoke, effectively the same as the Maynard tape primer and percussion caps used in real firearms of the mid to late 1800s but usually smaller and made from cheap plastic ...
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Diameter at breast height (DBH) is measured by holding the stick a fixed distance, usually 25 inches (64 cm), from the eye, and at breast height, which in the United States is 4.5 feet (1.4 m) up the bole of the tree. The left side of the stick is flush with the left side of the tree.
Size comparison between a Betamax cassette (top) and a VHS cassette (bottom) The heads on the drum [ 29 ] of a Betamax VCR move across the tape producing a writing speed of 6.9 or 5.832 metres per second [ 30 ] [ 31 ] with the drum rotating at 1800 rpm (NTSC, 60 Hz) or 1500 rpm (PAL, 50 Hz), [ 32 ] theoretically giving Betamax a higher ...
The 2mm gun was replaced by 3mm and 4mm weapons in the series, which was discontinued in 1938. [5] As with the related firearm series, this gun is now a collector's item with about a thousand ever produced. [1] It is notable for firing the smallest centerfire cartridge ever produced. [6]