About the Traverse Adjustment Bowditch Online Free Tool

The Traverse Adjustment Bowditch Online Free Tool distributes traverse closure error across distance-bearing legs using the Bowditch compass rule.

How to Use the Traverse Adjustment Bowditch Tool Online

1. Enter one leg per line as distance,bearingDegrees.
2. Run the tool to compute initial errors, relative precision, and adjusted increments.
3. Review the adjusted X/Y coordinates by leg.

Choosing Options Correctly

Use consistent units and bearings measured clockwise from north. Bowditch assumes error is proportional to leg length and is not a substitute for rigorous least-squares adjustment where observations have different weights.

Common Use Cases

• Adjust a small closed traverse.
• Teach compass-rule correction behavior.
• Check field traverse data before drafting.

Quick FAQ

Does this require known start coordinates?
No. It reports adjusted coordinates from an origin of 0,0 unless the tool provides start coordinate inputs.

Does it balance angles?
No. Enter corrected bearings if angular balancing is required.

When is Bowditch appropriate?
It is a common compass-rule adjustment when angle and distance measurements have comparable reliability.

What should I check before using adjusted values?
Check closure error, leg distances, bearings, units, and whether the traverse meets project tolerance.