Original vintage optical industry trade magazine ad for W. M. WELCH SCIENTIFIC COMPANY of Chicago, IL. The New Dodge Design Rheostat. Designed by Professor Homer L. Dodge, University of Oklahoma. Old 1923 laboratory instrument advertisement.
w m welch scientific company 1923 new dodge design rheostat vintage ad
- Product Code: s300
- Length: 9 inches
- Width: 6 inches
- Pages: 1
- Views: 83
- Availability: In Stock
- $20.00
$15.00
ON SALE
25% OFF
You save: $5.00 (25%)
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