Re: Available in early to mid 30's
If I remember Spot Welding was available in the early to mid 30's, However the machines were very big, clumsy, slow, and erratic in quality as well as being very expensive to buy and / or operate.
The beginning of WW-II began a need for R & D, and by the end of WW-II they were beginning to show evidence of wide spread usefulness.
I would guess that this object was produced Post WW-II.
As I remember!
ViggoG
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