Vintage beryllium copper tool display.
Fullsize image: https://s3-us-west-1.amazonaws.com/h...y_fullsize.jpg
https://s3-us-west-1.amazonaws.com/h...ol_display.jpg
More: https://en.wikipedia.org/wiki/Beryllium_copper
Previously:
https://www.homemadetools.net/forum/...116#post141296
https://www.homemadetools.net/forum/...374#post116664
https://www.homemadetools.net/forum/...026#post109323
https://www.homemadetools.net/forum/...948#post144750
https://www.homemadetools.net/forum/...893#post144522
https://www.homemadetools.net/forum/...153#post141491
https://www.homemadetools.net/forum/...061#post141008
https://www.homemadetools.net/forum/...906#post140565
https://www.homemadetools.net/forum/...445#post131720