The detail of a <a href="https://en.wikipedia.org/wiki/Hand_pump" class="extiw" title="en:Hand pump">hand pump</a>.
Translated into Telugu by <a href="//commons.wikimedia.org/wiki/User:Mekala_Harika" title="User:Mekala Harika">User:Mekala Harika</a>
2019-03-12
Own work by <a href="//commons.wikimedia.org/wiki/User:Manco_Capac" title="User:Manco Capac">Manco Capac</a>