BELT TENSION MEASURING DEVICE (SK3596)

"It can be used to adjust the tension on the cam belt where the movement of the timing belt is measured by load (NM).
Suitable for use on various cam belt widths
Clear incremental marking with knurled knob for precise measurement. Dual scale allows reading from top or bottom of tool.
Timing belt tension checking tool for use on timing belts in vehicles where the manufacturer specifies that the timing belt tension be set according to newton-meters, at a specific location on the belt's span between pulleys.
Applications include Porsche 928, 924 & 944, Audi V-6 and V-8 engines, certain Volkswagen engines, and others as noted in your service manual.
This tool measures the tension required to depress the timing belt, allowing you to adjust the position of the timing belt tensioner pulley to precisely the right spot. Use of this tool speeds up the timing belt installation process because it eliminates the guesswork in properly adjusting the timing belt, keeping you from having a belt that chatters from being too loose, or howls once hot, from being too tight."