A pocket sized set of 3
UTM corner rulers or "roamers" for 1:24,000, 1:25,000, and 1:50,000
scale maps.
The 1:24k and 1:25k
corners allow you to divide a 1km map grid to a10m precision.
The 1:50k corner allows
you to divide a 1km map grid to a 20m precision. Approximate size is
2.75" by 2.75 " (7cm X 7cm). |