Original vintage optical industry trade magazine ad for WM. GAERTNER & COMPANY of Chicago, IL. A-365 Chronograph with Two Pens. The record is made on a moving tape of coated paper, operated by a strong spring driven clock movement, regulated by a friction governor. Old 1923 laboratory equipment advertisement.
wm gaertner company 1923 a365 chronograph with two pens vintage ad
- Product Code: s309
- Length: 9 inches
- Width: 6 inches
- Views: 26
- Availability: In Stock
- $20.00
$15.00
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