pun4dPUND measured values are hhly dependent on the pulse width (ms) up to the point that the pulse width exceeds 10 RC, where R is the output impedance of the tester (normally 1680 W)Pund is a measure of weht. Get more information and details on the 'pund' measurement unit, including its symbol, category, and common conversions from pund to other weht units.