Mapping help

[Stewe]

I'm including only this new mapping you are talking about, with play and cue. Not other device mappings.

[Stewe]

Mapping. Help?
What part of a map can be used to estimate the distance in miles from one city to another?

The Key for map symbols
The Grid marks on the margin
The Scale
The Index

You aren't looking for TSI map don't you?