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Nominal Pipe Size (NPS) is a North American set of standard sizes for pipes used for high or low pressures and temperatures. [1] " Nominal" refers to pipe in non-specific terms and identifies the diameter of the hole with a non-dimensional number (for example – 2-inch nominal steel pipe" consists of many varieties of steel pipe with the only criterion being a 2.375-inch (60.3 mm) outside ...
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 ]
The development of the 'Tessar' lens is discussed by Nasse, [11] and shows its transformation from an f /6.3 lens for plate cameras using the original three-group configuration through to an f /2.8 5.2 mm four-element optic with eight extremely aspheric surfaces, economically manufacturable because of its small size. Its performance is 'better ...
The alternative Super series, denoted SnR, nR Plus or nR+, has an aspect ratio of 3∶2 (or as close as possible) and thus provides a better fit for standard 135 film (35 mm) at sizes of 8 inches or above. 5R is twice the size of a 2R print, 6R twice the size of a 4R print and S8R twice the size of 6R. 4D/6D is a newer size for most consumer ...
4 in × 1 in × 5 + 3 ⁄ 4 in (102 mm × 25 mm × 146 mm) = 377 cm 3. This smaller form factor is similar to that used in an HDD by Rodime in 1983, which was the same size as the "half height" 3 + 1 ⁄ 2 in (89 mm) FDD, i.e., 1.63 inches (41 mm) high.
Subdivisions of an inch are typically written using dyadic fractions with odd number numerators; for example, two and three-eighths of an inch would be written as 2 + 3 / 8 ″ and not as 2.375″ nor as 2 + 6 / 16 ″. However, for engineering purposes fractions are commonly given to three or four places of decimals and have been ...
Rear axle 3 ⁄ 8 inch (9.53 mm) diameter, 26 tpi GB Stems using 5 ⁄ 16 inch (7.94 mm) diameter, 26 tpi for the handlebar clamp Note that M8 × 1.00 metric threaded parts can interchange with 5 ⁄ 16 inch (7.94 mm) diameter × 26 tpi parts with a " Class B fit ", meaning you should not go back and forth between threadings.
Microscopique [8] Microscoop Microscopie 3 ≈ 1.058 mm: Excelsior [10] [b] Minikin [10] Diamant: Brillant [8] Viertelcicero: Kwart cicero 3 + 1 / 2 ≈ 1.235 mm: Ruby Brilliant [12] 4 ≈ 1.411 mm: Brilliant Perle: Diamant Halbpetit [8] Robijn Diamant Halve petit 4 + 1 / 4 ≈ 1.499 mm: Gem 4 + 1 / 2 ≈ 1.588 mm: Diamond ...