Special British Engineering Units

Table 3-12: Special Base Units in the British Engineering Units System.
Base quantity	name	symbol	Comment
length	foot	ft
mass	slug	N/A
temperature	Fahrenheit	degF	For the British engineering units system
temperature	Rankine	R or Ra	For the British engineering units (Rankine) system

Table 3-13: Derived British Engineering Units in COMSOL.
Derived quantity	name	symbol
force	pound-force	lbf


	If the British engineering units system is the base unit system, the COMSOL Multiphysics software constructs derived units from the applicable SI base units and the units listed in Table 3-12 and Table 3-13. This means, for example, that the unit for voltage displayed in the physics interface is lbf·ft/As rather than V (volt). In a text field that expects a voltage as input, you need to use the unit syntax when entering a numerical value (for example, 10[V]).