Actually feet, inches and pounds are imperial terms. http://en.wikipedia.org/wiki/Imperial_units

Metre (cm) and gram (kg) are SI-units (International System of Units)

You've mis-parsed my sentence. The part "in imperial terms" was meant to refer to the imperial measurements. The SI measurements were in parentheses for people who, like me, live outside of Liberia, Myanmar and the USA.

Ah, yes. Sorry :-)