Reading Latitude & Longitude Scales

Chapter 4, Homework question 2a from ASA's Coastal Navigation & Piloting textbook: Reading and plotting latitude and longitude chart scales.

[@dogwalker666]

Thank you for the education.

[@kikikirk]

This may be a dumb question, but why is there 6 figures for the latitude and only 5 figures for the longitude? Is it not known as a 6 figure reference point?

[@gtroblq]

parallels of latitude ( 0 -90 N and S) and meridians of longitude ( 0 -180 E and W)