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1945
Hardware Description
The WM was manufactured during World War II with a less wasteful use of material for the mechanism.The WM had many aluminum parts which were more prone to failure so the use of steel was resumed as soon as steel again became available. While the machine was lighter, it was also weaker.
Citations:
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Model Number:
WM (War Model) -
Manufacturer:
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Hardware Type:
Calculator -
Manufacture Year:
1945 -
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