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Gina, here the Title company determines whether the title to the property is free of liens, is legally owned by a given individual, and can offer title insurance to protect a land owner from title infringments or help transfer ownership.
Yet a surveyor is needed to actually mark out the boundary lines on a property. They can go from markers found on range/section corners and measure to the place in the legal description, or use GPS equipment to find the lines. Most around here still go the low-tech way and still it's a very involved process. There's a lot of training involved to become a surveyor. They are in high demand and charge a LOT for their services.