Computer · Surveying
An optical square is a surveying instrument primarily used to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1Draw or set out lines at 60°
- 2Set out perpendicular lines (90° offsets)✓
- 3Draw parallel lines
- 4Draw or set out lines at 45°
Correct answer
Set out perpendicular lines (90° offsets)
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