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Meter box cover manufactured by Ford Meter Box for New Orleans. Ford Meter Box was founded by Edwin Ford in Hartford City, Indiana in 1898. [1] He invented the meter box as a place to install water meters outside of homes that did not have basements. Ford's early experimentation found that meters could be installed in pits to protect them from ...
Water meter in Belo Horizonte. Displacement meters are commonly referred to as Positive Displacement, or "PD" meters. Two common types are oscillating piston meters and nutating disk meters. Either method relies on the water to physically displace the moving measuring element in direct proportion to the amount of water that passes through the ...
A curb box (also known as a valve box, buffalo box, b-box, or in British English stopcock chamber) is a vertical cast iron sleeve, accessible from the public way, housing the shut-off valve (curb cock or curb stop) for a property's water service line.
A residual-current device (RCD), residual-current circuit breaker (RCCB) or ground fault circuit interrupter (GFCI) [a] is an electrical safety device, more specifically a form of Earth-leakage circuit breaker, that interrupts an electrical circuit when the current passing through line and neutral conductors of a circuit is not equal (the term residual relating to the imbalance), therefore ...
The 530 millimeters (20.9 in) long barrel and its prong type barrel extension used for lock up, made up the barrel unit of the MG 42. It could be quickly changed by the machine gun crew and weighed 1.75 kg (3.9 lb) including the locking piece. [6] The barrels could have traditional rifling or polygonal rifling.