Ultrasonic frame aperature

For experiments on the reflection and absorption of ultrasonic waves;
Metal frame for vertical mounting of hard or soft plates with different surfaces, which can be placed on the angle scale of the goniometer, incl. matching foam plate
Maximum plate size: 297 x 297 x 28 mm
Dimensions: 30 x 3 x 33 cm
Mass: approx. 873 g