A professional who inspects, tests, and adjusts scale mechanisms and repairs or replaces defective parts to ensure balance and accuracy of scales, using handtools and test equipment. Responsibilities include:

• Rolls test weights to and from position on scale platform and reads dial indications or weight tickets (if scale is so equipped) to verify accuracy of scales.
• Adjusts parts, such as loading box, rack, pendulum weights, and cams, for travel and leverage to determine type of error and coordinate readings with weights.
• Adjusts and tightens parts, such as locking handle, cam holddowns and ribbons, pendulum lever assembly, and stops for tare-beam lever, using handtools.
• Reduces friction to minimum in all bearings and parts of scale, using chisels, taps, tin snips, hacksaw, plumb bob, and electric drill.
• Repairs or replaces defective parts.
• May install parts in conjunction with balancing operation.