Useful Object 1
You blow into your chosen hole around the edge of this useful object, and it gives you the note you need!
This belonged to my father, and he would use it, I think, to find the right note on which to start singing - or for his choir to tune up !
Somewhat more flexible than a tuning fork.......which only gives you A !
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- Canon PowerShot SX40 HS
- 1/50
- f/4.0
- 4mm
- 160
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