Archaeology Skills: stringing up an excavation unit

What is the primary purpose of setting up an excavation square as demonstrated?

• To mark the boundaries of a future building

• To create a precise grid for archaeological excavation

• To practice geometry skills in an outdoor setting

• To measure the overall size of a field

Which of the following items is NOT listed as essential equipment for setting up an excavation unit?

• Rubber mallet

• 30m tape

• Shovel

• Builder's string

To ensure a perfect right angle when setting up an excavation square, what specific measurement technique is used, based on Pythagoras' theorem?

• Measuring all sides to be equal

• Using a protractor to mark 90 degrees

• Creating a 3-meter by 4-meter triangle with a 5-meter hypotenuse

• Estimating the angle by eye

Why are offset pegs used in setting up an excavation unit for a long excavation season?

• To make the square larger

• To provide extra support for the main pegs

• To allow the removal of central pegs without losing the corner's position

• To mark different excavation layers