Tunnels that require different bore diameters at different parts of their routes also make the use of a tunnel boring machine impractical because of delays in adjusting the bore diameter.
The ratio of the piston stroke to the cylinder bore diameter is an important design consideration.
A smoking-pipe stem with a bore diameter of five sixty-fourths of an inch.
To take advantage of this for longer-range firing, gun-barrel lengths jumped to 30 35 times bore diameter.
By the 16th century, gunners had adopted the custom of describing the length of a cannon's bore in calibres, that is, in multiples of the bore diameter.
The earliest such weapon, depicted in the English de Millimete manuscript, was some three feet long with a bore diameter of about two inches (five centimetres).
An Ordnance Office decree of 1722 led to a standard army musket, called the "Long Land," which had a 46-inch (1,168-millimetre 1,168-millimetrelibarrelr bore diandter, of.75 inch (19 millimetres).
Room bore diameter of this magnet was 70 mm.
The beam is created with a 22 NA-Point-Source and a lead collimator, with 0.5 mm bore diameter.
The integrated whole-body MR is a 3 Tesla (T) niobium-titanium magnet with 60-cm patient bore diameter [22].
A 4.7T MR scanner with a bore diameter of 155 mm (PharmaScan, Bruker BioSpin, Ettlingen, Germany) was utilized.
