Nope. Missing all the other weather arrows and symbols. I doubt it was a partial conversion because I’ve got two identical typeboxes like this. 

Mysteries!

On Mon, Jan 9, 2023 at 9:32 PM Russ Miller <wa3frp@gmail.com> wrote:
Weather typebox!  The arrows were used to represent wind direction.

73
Russ WA3FRP 

Sent from my iPhone

On Jan 9, 2023, at 8:51 PM, Nick England <navy.radio@gmail.com> wrote:


I have a couple of M28 typeboxes with
left-arrow instead of period
asterisk instead of semi-colon
plus instead of exclamation
percent instead of question

What was the application for this???
Algebra class?
Just curious...

Nick England K4NYW
www.navy-radio.com
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