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The millimetre (SI symbol: mm) is a unit of length in the metric system equal to 10 −3 metres ( 1 / 1 000 m = 0.001 m). To help compare different orders of magnitude , this section lists lengths between 10 −3 m and 10 −2 m (1 mm and 1 cm).
The barn (b) is a unit of area used in nuclear physics equal to one hundred femtometres squared (100 fm 2 = 10 −28 m 2). The are (a) is a unit of area equal to 100 m 2. The decare (daa) is a unit of area equal to 1000 m 2. The hectare (ha) is a unit of area equal to 10 000 m 2 (0.01 km 2).
From the front a Land Rover is about 1.5 m wide, most tanks around 3–3.5 m. So a SWB Land Rover from the side is one finger wide at about 100 m. A modern tank would have to be at a bit over 300 m. If, for instance a target known to be 1.5 m in height (1500 mm) is measured to 2.8 mrad in the reticle, the range can be estimated to:
The French scale measures and is proportional to the outer diameter of a catheter, with 1 French (Fr) defined as 1 ⁄ 3 millimeter, making the relationship: 1 mm = 3 Fr. Thus, the outer diameter of a catheter in millimeters can be calculated by dividing the French size by 3. [ 2 ]
Different lengths as in respect to the electromagnetic spectrum, measured by the metre and its derived scales.The microwave is between 1 meter to 1 millimeter.. The millimetre (international spelling; SI unit symbol mm) or millimeter (American spelling) is a unit of length in the International System of Units (SI), equal to one thousandth of a metre, which is the SI base unit of length.
82.5 (3.25) 8×63mm patron m/32: 8.20 (.323) Rebated: 62.81 (2.473) 12.18 (.480) 12.43 (.489) 11.51 (.453) 9.1 (.358) 84.62 (3.331) 8×64mm S: 8.20 (.323) 64.00 (2.520) 12.00 (.473) 11.95 (.470) 10.85 (.427) 8.96 (.353) 87.5 (3.445) 8×68mm S: 8.20 (.323) 67.50 (2.657) 13.00 (.512) 13.30 (.524) 12.15 (.478) 9.14 (.360) 87 (3.425) 8mm Remington ...
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The accuracy of fire at 300 m (328 yd) (R 50) is stated as 75 mm (3.0 in), at 600 m (656 yd) (R 50) is stated as 140 mm (5.5 in) and at 800 m (875 yd) (R 50) is stated as 230 mm (9.1 in). R 50 at a specific range means the closest 50 percent of the shot group will all be within a circle of the mentioned diameter at that range.