LED VFD and LCD pocket calculators
Faber Castell TR4
Faber Castell was a famous company who made slide rules. As the electronic calculating started, they made as also some pocket calculators, but it was never a succes. This one is one of the last versions they made before they left the calculator market.
This pocket calculator has a green VFD display. Unfortunately I could not test the calculator as it has a very special batteries.
If you want pictures in a better resolution, don't hesitate to email me
