That's why I got one of these bad boys. It does inch pounds, foot pounds and newton meters at the push of a button. Still needs calibration checked once every 5 years or so but it's damn accurate otherwise.
http://buy1.snapon.com/catalog/item.asp?item_ID=68414&group_ID=17509

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Current Stable:
01 ML55 AMG
92 500E (a few mods)
87 300E (lots of mods)
00 Chevy 3500HD Diesel Box Truck
68 18' Donzi Marine
06 GT i-Drive7 1.0 Mountain Bike (with GPS!)

PREVIOUSLY OWNED:83 300SD, 87 420SEL, 88 420SEL, 90 420SEL, 86 560SEL, 86 190E 2.3-16V AMG, 94 E320