![](http://www.alamy.com/thumbs/6/3925F95D-BAC0-4061-BC25-6C6C90933CB1/2F76T4N.jpg)
Norra Vasa 1919. Stand with serial wasters to 10000 voters at Hultman's experimental station. Series, which were rotated with machine power, helper means to the lead selectors. For each such, 3 series of series were needed.
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Photo credit: © BTEU/TEKNISKA / Alamy / Afripics
License: Licensed
Model Released: No
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