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Based on the provided OCR, it's difficult to give a complete description of the instrument. The text appears to be an excerpt from a document in Bengali. It likely discusses the concept of "Pargana" and "Statehood" (possibly a political theory or history lesson), referencing thinkers like Aristotl...

Based on the provided OCR, it's difficult to give a complete description of the instrument. The text appears to be an excerpt from a document in Bengali. It likely discusses the concept of "Pargana" and "Statehood" (possibly a political theory or history lesson), referencing thinkers like Aristotle. Several words and phrases are unclear or appear to be errors in the transcription. More context is needed to accurately summarize the instrument's purpose and role.