Hidden City Walkthrough

Accurate altitude

Exploration Stage
Wonderful Cat Cafe
From
Helen
Description
To activate the anti-fog device, you need a "longitude and latitude scale." When my father was at the observatory, he once brought it home with him when he returned from a trip. I haven't seen it for a long time. Can you help me find it?
Completed
Thank you! This "longitude and latitude scale" allows me to measure the altitude needed to activate the anti-fog device. Finally, I can see the stars again!

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