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Glass chart. A 1951 USAF resolution test chart is a microscopic optical resolution test device originally defined by the U.S. Air Force MIL-STD-150A standard of 1951. The design provides numerous small target shapes exhibiting a stepped assortment of precise spatial frequency specimens.
Comparison of SWG (red), AWG (blue) and IEC 60228 (black) wire gauge sizes from 0.03 to 200 mm² to scale on a 1 mm grid – in the SVG file, hover over a size to highlight it. In engineering applications, it is often most convenient to describe a wire in terms of its cross-section area, rather than its diameter, because the cross section is directly proportional to its strength and weight ...
Dog agility is a dog sport in which a handler directs a dog through an obstacle course in a race for both time and accuracy. Dogs run off leash with no food or toys as incentives, and the handler can touch neither dog nor obstacles. The handler's controls are limited to voice, movement, and various body signals, requiring exceptional training ...
The Miniature American Shepherd is a small dog, with the breed standard specifying a height of 14-18 inches (36–46 cm) for males and 13-17 inches (33–43 cm) for females. [1] The topline is level from withers to hip joint. The tail may be undocked, a natural bobtail, or may be docked to a length not exceeding three inches.
An invasive type of lizard the size of a dog has been spotted in parts of South Carolina. Here’s where and what to know about the creature.
A table of the gauge numbers and wire diameters is shown below. [1] [2] The basis of the system is the thou (or mil in US English), or 0.001 in. Sizes are specified as wire diameters, stated in thou and tenths of a thou (mils and tenths). The wire diameter diminishes with increasing size number.
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]
The dog’s vigilance, size, affectionate temperament, and ease of care soon resulted in its becoming a popular choice in urban centers as well, and by the 1920s the Miniature Fox Terrier was iconic. So well known and popular was the “Little Foxie” that very little thought was given to the need to preserve its lines.