A survey record maintained by the Revenue Department that shows the boundaries, dimensions, and adjacent survey numbers of a land parcel.
The Field Measurement Book (FMB) is the official survey sketch for a land parcel, maintained by the Revenue Department. It shows the physical boundaries of the survey number, measurements in links or meters, adjacent survey numbers, and notable land features such as roads, water bodies, or structures. The FMB is maintained by the Village Administrative Officer and is based on the original land survey conducted during the settlement period.
The FMB is essential for verifying that the actual extent of a land parcel matches what is recorded on the Patta. It helps identify encroachments, boundary disputes, or unauthorized subdivisions that may not be visible in other documents. During due diligence, the FMB should be cross-checked with a physical site inspection — if the boundaries on the ground don't match the FMB sketch, it indicates a survey discrepancy or encroachment that must be resolved before acquisition.
The FMB sketch places the survey number at the center, with boundary lines drawn to scale showing measurements along each side. Adjacent survey numbers are labeled outside the boundary lines. The north direction is marked for orientation, and a scale is noted at the bottom. Key features — roads, paths, channels, wells — are marked with standard symbols. When reading an FMB, pay attention to the total extent calculated from the boundary measurements and compare it with the extent recorded on the Patta.
A unique numeric identifier assigned to each land parcel by the Revenue Department during the original land survey.
A revenue document issued by the Tamil Nadu government that records the current owner of a land parcel.
A comprehensive investigation of a land parcel's legal title, physical condition, regulatory compliance, and financial viability before purchase.
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