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Metric prefixes; Text Symbol Factor or; yotta Y 10 24: 1 000 000 000 000 000 000 000 000: zetta Z 10 21: 1 000 000 000 000 000 000 000: exa E 10 18: 1 000 000 000 000 000 000: peta P 10 15: 1 000 000 000 000 000: tera T
The centimetre (SI symbol: cm) is a unit of length in the metric system equal to 10 −2 metres ( 1 / 100 m = 0.01 m). To help compare different orders of magnitude, this section lists lengths between 10 −2 m and 10 −1 m (1 cm and 1 dm). 1 cm – 10 millimeters; 1 cm – 0.39 inches; 1 cm – edge of a square of area 1 cm 2
A metric ounce is an approximation of the imperial ounce, US dry ounce, or US fluid ounce. These three customary units vary. However, the metric ounce is usually taken as 25 or 30 ml (0.88 or 1.06 imp fl oz; 0.85 or 1.01 US fl oz) when volume is being measured, or in grams when mass is being measured.
The conversion between different SI units for one and the same physical quantity is always through a power of ten. This is why the SI (and metric systems more generally) are called decimal systems of measurement units. [10] The grouping formed by a prefix symbol attached to a unit symbol (e.g. ' km ', ' cm ') constitutes a new inseparable unit ...
Centimeters (cm) are avoided as they cause confusion when reading plans. For example, the length two and a half meters is usually recorded as 2500 mm or 2.5 m; it would be considered non-standard to record this length as 250 cm. [12] [13]
The codes given in the chart below usually tell the length and width of the components in tenths of millimeters or hundredths of inches. For example, a metric 2520 component is 2.5 mm by 2.0 mm which corresponds roughly to 0.10 inches by 0.08 inches (hence, imperial size is 1008).
1 palmo mercantile † = 24.908 cm [16] 1 palmo architettonica # = 22.319 cm [16] 1 palmo d'ara = 12.500 cm [16] 1 once # = 10 decimi [19] 1 pie # (foot) = 16 once = 11.72 in [19] 1 pié = 11.592 in [19] 1 braccia da mercante † = 67 cm [8] 1 braccia par le tele ‡ = 63.5 cm [8] 1 braccia d'ara = 75 cm [8] 1 canna = 78.4 in [19] 1 canna ...
Table of Chinese square units effective in 1930 [3] Pinyin Character Relative value Metric value Imperial value Notes fāng cùn: 方寸: 1 ⁄ 100: 11 + 1 ⁄ 9 cm 2: 1.722 sq in square cun fāng chǐ: 方尺: 1 1 ⁄ 9 m 2: 172.2 sq in 1.196 sq ft square chi fāng zhàng: 方丈: 100 11 + 1 ⁄ 9 m 2: 119.6 sq ft 13.29 sq yd square zhang