| http://www.w3.org/ns/prov#value | - It will be understood, however, that other suitable materials or techniques may be used, such as stamped, molded or cast parts, or non-metallic (e.g., plastic) components, for example.The bolt 24 that forms the horizontal pivot axis may suitably be an ordinary bolt for being passed through the bores, with the bores being threaded so as to lock the bolt in place.
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