Not sure but I would think maybe 35/40 pounds, maybe 50???
You count each point, and each are 1 inch, even if they are 15 inches long. You measure the smallest circumference between the base and front points, the longest length of the palm that parallels the beam and in-between two points top and the fronts, and the widest width of the palm 90 degrees from the line, again between two points. You measure the palm from the back side and you roll the tape over the edge and to the center of the thickness.
Deduct the differences from right and left and add the width. If any abnormal points also get deducted.
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