This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionCarbon and ceramic resistors of different power ratings.jpg
English: This photo shows carbon and ceramic resistors of different power ratings alongside a scale. You can use it to get a rough estimate of your resistors' power dissipation. The scale smallest division is millimetres (mm) and the largest (numbered) is centimetres (cm).
Português: Esta fotografia mostra resistências de carvão e cerâmicas de diferentes potências ao lado de uma régua. Pode usá-la para obter uma estimativa grosseira da potência que uma resistência consegue dissipar. A divisão mais pequena na escala da régua corresponde a milímetros (mm) e a maior a centímetros (cm).
to share – to copy, distribute and transmit the work
to remix – to adapt the work
Under the following conditions:
attribution – You must give appropriate credit, provide a link to the licence, and indicate if changes were made. You may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.
share alike – If you remix, transform, or build upon the material, you must distribute your contributions under the same or compatible licence as the original.