Not sure what that is your holding. Pointed end of beam goes into slot on left upright. Left side if beam goes in 5 grain increments. Right side should be 1 grain and 10ths of a grain. Pan should hang off right side out near the end. Screw on base gets it almost level and centered on scale on left upright . Lock nutsbon right end for final adjustment to zero. Pretty sure that's how it goes together. Zero the scale with everything set to zero as far as the weights on the beam.