Richard
Final Approach
- Joined
- Feb 27, 2005
- Messages
- 9,076
- Location
- West Coast Resistance
- Display Name
Display name:
Ack...city life
Please provide information on some symbols and Lines of Constant Grid Variation as shown. What are the GN and GV grids and how do I use the Convergence Table shown in the legend at the bottom of the chart?
Also, what are the two letter identifiers shown at 15 degree intervals of both Lat and Long and what are their significance to me? The letters are at the perimeters of the chart (EX: EJ 30*Lat EH)
A light grey symbol shown as either a large cross +, a "T", an upside down "T", an "L", or a backwards "L" at some, but not all, Lat Long intersections (EX: "T" at 109*00'00" 48*00'00").
I have an idea what they may mean but am not sure.
Also, what are the two letter identifiers shown at 15 degree intervals of both Lat and Long and what are their significance to me? The letters are at the perimeters of the chart (EX: EJ 30*Lat EH)
A light grey symbol shown as either a large cross +, a "T", an upside down "T", an "L", or a backwards "L" at some, but not all, Lat Long intersections (EX: "T" at 109*00'00" 48*00'00").
I have an idea what they may mean but am not sure.