Another name of mainspring tension is
Key tension
Rack tension
Carriage tension
None of these
AOnly 2
BOnly 4
COnly 1
DOnly 3
Another name of mainspring tension is
Key tension
Rack tension
Carriage tension
None of these
AOnly 2
BOnly 4
COnly 1
DOnly 3
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Where we will type the word 'URGENT". On a cover?