Lift weighing

Lift mechanism comprising:

• mass support means,
• vehicle means,
• arm means interconnecting said mass support means and said vehicle means for relative movement therebetween,
• said arm means comprising a pair of arms, each said arm being pivotally mounted about a pivot axis, and
• two pairs of strain gauges on each said arm,
• a first pair being nearer to and a second pair being farther from said mass support means,
• said pivot axis being farther from said mass support means than said second pair of strain gauges,
• in which said arms are parallel, and have the general configuration of an upside-down U.