Wilhelmi softening point apparatus
Used for determining the softening point of bituminous materials for road construction,
according to Wilhelmi method.
The softening point is the temperature where a layer of thermoplastic material has a deformation given by a steel sphere weighting 13,9 g.
The apparatus comprises a ring divided in two halves on a metal support frame, glass beaker, steel ball 15 mm dia.
Weight: 2 kg approx.