Vernier type apparatus for the experimental determination of the relationship between a load applied to a wire and the resulting extension. Consists of a scale plate carrying a 0 to 30mm scale and a movable vernier readable to 0.1mm. Both have bars with clamping screws for the wires and hooks for the tension weight and loading masses. A ceiling clamp is provided for the upper ends of the wires, together with a pair of large wood screws for attaching it to a convenient overhead beam, door frame etc. A tension weight, mass 1.3kg approx., for the comparison wire is also included. (No load masses or wires supplied).
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