Copper T variant with insertion device

T-coil with slightly dipped ‘arms’. The shaft is wound round with copper, and there is a thread on its end. The insertion device has a sliding part and is provided with markings.

 

Inventory Number
1816
Dating
vor 1987
Material
plastic, cooper
Size in cm
27,8 x 4 x 1
Condition
very good
Donor
Univ. Prof. Dr. Robert Snowden