Temperature Adjustments

Rockford Watch Company Grade 545 Railroad Grade Movement Rating Certificate

By Nathan Moore

In Rockford

Rockford Watch Company Grade 545 Rating Certificate for Movement #560054, August 1904 Around 1906, the Rockford Watch Company attempted to gain more market share by leveraging stricter specifications required for railroad service watches. To further reinforce the precision and reliability of these watches, the company...

Science

Private Label Trade Names on American Pocket Watches: The Non-Magnetic Watch Company: Part 35: Theodore Gribi’s Experiments

By Nathan Moore

Pictured: “Paillard’s Non-Magnetic Balances” Illustrations (Theodore Gribi), Western Electrician, September 22, 1888 After non-magnetic watches and anti-magnetic shields were introduced to the market in the 1880s, the industry was flooded.

Science

Private Label Trade Names on American Pocket Watches: The Non-Magnetic Watch Company: Part 26: Edwin J. Houston’s Experiments: Introduction

By Nathan Moore

Pictured: Excerpt from “Paillard’s Non-Magnetic Compensating Balance and Hair-Spring for Watches” by Prof. Edwin J. Houston, Journal of the Franklin Institute, March 1888 In early 1888, the newly reorganized Non-Magnetic.

Private Label Trade Names on American Pocket Watches: “Burlington Watch Co.” Part 13: Adjusted to Temperature

By Nathan Moore

In Adjustments , Catalogs & Resources , History , Illinois Watch Company

Pictured: Burlington Special Temperature Adjustments, Burlington Watch Company Catalog, c.1911. The second-generation 16-Size “Burlington Special” (Grade 185) was described in catalogs and advertisements as “Adjusted to Temperature.” This claim contrasts the “Regulated to Temperature” terminology utilized for the unadjusted variant of the first-generation Grade 174...

Adjustments , Analysis , History , Illinois Watch Company , Movements

Private Label Trade Names on American Pocket Watches: “Burlington Watch Co.” Part 9: Adjustments and Regulation of the Grade 174 Burlington Special

By Nathan Moore

Pictured: Burlington Watch Company Grade 174 (Unadjusted) Movement Manufactured by the Illinois Watch Company, c.1908. The early 16-Size “Burlington Special” watches sold by the Burlington Watch Company were based on.