Figure 11.
The image features a grey mechanical tool prominently displayed in the foreground, equipped with a circular dial gauge on top that measures pressure, potentially in psi or bar. Below the gauge, the tool features a metal piece that rests on a flat, slightly dirty surface. Surrounding the tool are various other metallic elements, indicating a workshop or mechanical setting. The texture of the surface is visible, suggesting it is designed for tool use. The tool shows signs of wear, with dirt and small scratches on its casing.Barcol hardness tester