中型三腳鐵架，60cm長鐵棒，固定夾一個。
附45cm長刻度尺一支，帶鉤砝碼10g 6個、20g 砝碼2個、100g砝碼 1個、拉力彈簧一條。
Designed for investigating potential energy and vibrating masses as well as Hooke’s law.
Includes a 45-cm scale mounted on a 60-cm steel rod support with clamp, contain with 9 hooked masses(10g×6 / 20g×2 / 100g×1) and a spring with a weight hanger .
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