A bi-directional load cell of plus or minus 5 kN with nominal sensitivity 2 mV/V and accuracy of 0.003 percent, working in both compression and tension.

Two displacement transducers, 10 mm and 25 mm, each with 1 kOhm nominal resistance, 0.25 percent linearity and 0.002 mm repeatability.

A 1000 kPa pressure transducer with 0.1 kPa accuracy completes the set, so normal stress is measured rather than inferred from a hanging weight.