The knife sharpening tool or machine he is using is rarely seen in the modern world. It's an old machine.
The knife sharperner is checking to see whether the sickle is sharpened enough.
Sparks flying off the sickle he is sharpening.
You might also like: Indian Cobblers or Artisans in India or Glass making - photos of a glass maker at work or Indian Artisans making small statues or Masons at Work
There are also a lot of photographs of other occupations ranging from weaving, tailoring to painting and you can check out the label Occupations or Skilled Labour