English: The image shows a range of seven snorkels in a Britmarine (W. W. Haffenden) Sub-Aqua catalogue from the 1970s. The captions in English, French and German describe the features of each snorkel and identify which six are made to British Standard BS 4532 "Specification for snorkels and face masks" of 1969.
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 license, 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 license as the original.