My Handy-Dandy Boy Scout Compass


 

I can measure horizontal field of view with my hand-dandy Boy Scout compass from inside a padded cell:
https://stereopix.net/photo:bYKy3nJdqZ/


 

On Thu, Apr 1, 2021 at 12:03 PM, Roger Maddy wrote:
https://youtu.be/kMYYuqFmLG0
Sorry it's kinda dark at sunset.
Let me know if you need a brighter demo, and I'll find a spot earlier in the day.

Hope this helps.


 

Here's how I use my handy-dandy Boy Scout compass on my cell phone for estimating horizontal field of view:
https://youtu.be/kMYYuqFmLG0