Industrial casters commonly used two units: low length unit: an inch equals the total length of the three barley; Low weight units: a pound equals an extract of barley from grain in the middle of the weight of 7000 times; About English unit length: 1959 years later, the American English in inches ( 英寸) And inch inch in scientific applications and commercial use of unity is 25. 4 mm, but American kept to be used in slightly different measurement; Measuring inches; 。 Low 1 inch ( 英寸) = 2. 54 cm ( cm) Low 1 foot ( 脚) = 12 inches = 30. 48 cm * 1 code ( 院子里) = 91 = 3 feet. 44 cm * 1 mile ( 英里) = 1760 yards = 1. 609344 kilometers ( km) English unit weight conversion: low grain (1 谷物) = 64. 8 mg * 1 DRAM ( drachm) = 1/16 of an ounce ( 盎司) = 1. 77 grams of low 1 oz = 1/16 pounds ( 磅) = 28. 3 g * 1 pound = 7000 grains = 454 g * 1 stone 石) = 14 pounds = 6. 35 kg * 1 quart ( 季度) = 2 stone = 28 pounds = 12. 7 kg * 1 hundredweight ( 英担) = 4 quarts = = 50 112 pound. 8 kg * 1 tons ( 你的) = 20 hundredweight = 2240 pound = 1016 kg unit conversion requires a process of practice makes perfect, when we see much, much, no matter the somebody else give you is the domestic units or foreign units, you can be quickly converted to unit you are familiar with. If you are engaged in this industry, industrial casters will often meet you inches and the conversion between cm, mm; And unit conversion between relatively less in daily work. This paper label: shock casters industrial truckle heavy-duty casters a: castor enterprises under the development and changes of an article: how to know the quality of industrial casters is good or bad