Stages power meters for campagnolo carbon cranks have been two years in the making and feature a custom developed strain gage that precisely measures your power through the structure of a campagnolo designed hollow carbon crank arm the new stages power meter is slimmer and up to 28 percent lower profile than our original meter its sleeker by way of a 17 percent reduction in frontal area and weve also made it stronger the new housing design increases the strength of the battery door and ho