Hi all,
I found this totally by chance, it ends in just under 2½ hours. If it doesn't get any bids I will put in a late one myself so that someone (else!) here could see about putting it to use!
I've asked if the scale is in cN/g-f or something else.
Vintage 1970s Keyboard Pressure Gauge
http://www.ebay.co.uk/itm/281522346948
eBay 281522346948 wrote:Vintage 1970s Keyboard Pressure Guage
A possibly unique instrument
Designed to assess the finger pressure required to activate a key on a keyboard/keypad. Used in the telephone industry when keys started to replace dials. I used it to check keys & keypads in telephone design in the 1980s while working for ITT.
Built in Belgium, possibly by Bell Telefone Manufacturing, Antwerp part of ITT at the time.