Two parallel sets of brackets are secured to a rigid vertical support (not supplied) a distance apart in a vertical line. Two wire specimens of the same length have one end attached to the upper bracket. The other end of each wire is attached to a vernier slide which slides through the lower bracket.
Each lower bracket has an extension scale attached, whilst the vernier slides have a vernier scale attached. Both allow extensions of 0.1mm to be measured. The vernier slides are both connected by a common link to ensure equal and balanced loading of each wire. A Load hanger can be moved along the link until strains are equalised in each wire. A level indicator is supplied to aid equalisation of strain.
A set of 6 wires is supplied of differing materials and diameters.
