Two blue lines

Two black lines

Two green lines

Two yellow lines

Top of the page

Bottom of the page

Top of the page and worked down wards

Bottom of the page and worked up wards

Offset line

Chain line

Object line

Survey line

Align the chain

Measure the distance

Set up the instrument

Symbol denoting the station point

Align the chain

Name of the line

Set up the instrument

Measuring the distance