Metric graduations only.Two instruments in one! Use these precision Pesola scales to determine the weights of numerous specimens, or attach the optional pressure set to use them as dynamometers to determine the amount of pressure needed to move objects. With the optional pressure set attached, you can also use these scales as penetrometers to test soil compaction. Pesola scales work in any position - even overhead. Each scale features high quality, non-corroding components housed in an abrasion-resistant anodized aluminum case. Two-sided graduations are inversely proportional so you can easily read measurements from different positions. Tare screws allow you to "zero-out" the weight of various containers from 15% to 25% of the scales capacity. Drag pointers measure the maximum readings obtained per weighing. Handle, drag pointer, and plastic case included. Upper and lower suspensions rotate.