The magnification is indicated in the caption (e.g. for 100-fold magnification V = 100:1, or V = 100x) or as scale directly on the figure. For example in figures 1 and 2, the defined measured length is indicated directly on the figure.

Additional references:
Metallographic specimen

Metallographic specimen preparation

  • Fig. 1: Indication of defined measured length of 50 µm directly on the figure
  • Figure 2: equal to figure 1, measured length 20 µm