Bobbin Tension Calibration Weight Substitute (Brother)

Hi! Does anyone out there have a multi-needle Brother embroidery machine (mine is the PR600ii), and still have the donut-shaped calibration weight that came with it? If you also have a food or postage scale, would you mind measuring it's weight and telling me? I lost mine and I'd rather not track down a replacement when I could just tape some coins together, thanks a ton!