« Back to Dictionary Index
Birmingham Gauge (BG)
Definition:
The Birmingham Gauge (BG) is a system used for designating the diameters of rods and wires by assigning numbers. It is now considered obsolescent and has largely been replaced by the metric system for measuring diameters.
Key Characteristics:
- Numbered Designation: BG uses a numerical system to represent the diameter of rods and wires. For example, a “10 gauge” wire would have a specific diameter based on the BG scale.
- Obsolescence: The Birmingham Gauge has been largely replaced by metric measurements, which are more universally standardized and easier to use in modern engineering and manufacturing.
- Historical Use: The BG system was widely used in the past, especially in the UK and for certain types of engineering applications. It provided a convenient way to specify wire and rod sizes before the widespread adoption of metric units.
- Conversion: Converting from BG to metric measurements requires reference tables or conversion formulas, as the two systems use different scales.
Applications:
- Historical Context: Primarily used in historical contexts and older machinery or specifications.
- Special Cases: Occasionally used in specific industries or applications where traditional standards are still in use.
Summary:
The Birmingham Gauge (BG) is an old system for specifying the diameters of rods and wires using numbered designations. While it has been largely replaced by the metric system, it remains a part of historical engineering practices and certain specialized contexts.