Yecker, Carl A.

Scope and Contents Series contains research reports, compensation and fatigue test data, correspondence, drawings, photographs, and various instructions that pertain to the production, design, distribution, assembly, use, and performance of marine chronometers. Drawings and photographs show various chronometers and parts: Models 4221, M21, M22, and M23, among others. Beyond chronometers, this series highlights Hamilton’s contributions to World War II through the Army-Navy E Award and “Tomorrow In the Making” - ...

Scope and Contents Series contains research reports, compensation and fatigue test data, correspondence, drawings, photographs, and various instructions that pertain to the production, design, distribution, assembly, use, and performance of marine chronometers. Drawings and photographs show various chronometers and parts: Models 4221, M21, M22, and M23, among others. Beyond chronometers, this series highlights Hamilton’s contributions to World War II through the Army-Navy E Award and “Tomorrow In the Making” - ...

Scope and Contents Series contains research reports, compensation and fatigue test data, correspondence, drawings, photographs, and various instructions that pertain to the production, design, distribution, assembly, use, and performance of marine chronometers. Drawings and photographs show various chronometers and parts: Models 4221, M21, M22, and M23, among others. Beyond chronometers, this series highlights Hamilton’s contributions to World War II through the Army-Navy E Award and “Tomorrow In the Making” - ...

Scope and Contents Series comprised of reports, drawings, meeting minutes, specifications, and procedures documents processes used in designing dials. Processes include photoforming parts, photoengraving, and finishing. Of note are reports on luminous dials and the measuring and monitoring of radium.

Scope and Contents The collection primarily consists of blueprints, reports, correspondence, photographs, and memos that pertain to the research, development, design, manufacture, and distribution of products created at Hamilton. The materials reflect the company’s early reputation for timekeeping accuracy, followed by their expansion into the production of marine chronometers, military instruments, and metals manufacturing. Blueprints and drawings depict various mechanisms, parts, machines, and tools...

Scope and Contents Series consists of catalogs, lists, and drawings that detail various specifications and procedures for the manufacture, testing, and quality control of products manufactured for military use. Materials in this series pertain to anything that was developed to comply with U.S. Department of Defense or Military standards.Featured timepieces and instruments include: Strap Watches 987A and S, 8 Day Civil Date Elapsed Time Clock, Comparing Watch 2974B, Navigational Watch 3992B, Master...

Scope and Contents Series consists of correspondence, tests, research reports, and drawings that document the development, application, and production costs of metal alloys for hairsprings. Correspondence pertaining to the acquisition, analysis, and use of raw materials is mostly between Hamilton and International Nickel Company.

Scope and Contents Series contains research reports, compensation and fatigue test data, correspondence, drawings, photographs, and various instructions that pertain to the production, design, distribution, assembly, use, and performance of marine chronometers. Drawings and photographs show various chronometers and parts: Models 4221, M21, M22, and M23, among others. Beyond chronometers, this series highlights Hamilton’s contributions to World War II through the Army-Navy E Award and “Tomorrow In the Making” - ...

Scope and Contents The collection primarily consists of blueprints, reports, correspondence, photographs, and memos that pertain to the research, development, design, manufacture, and distribution of products created at Hamilton. The materials reflect the company’s early reputation for timekeeping accuracy, followed by their expansion into the production of marine chronometers, military instruments, and metals manufacturing. Blueprints and drawings depict various mechanisms, parts, machines, and tools...

Scope and Contents Series contains research reports, compensation and fatigue test data, correspondence, drawings, photographs, and various instructions that pertain to the production, design, distribution, assembly, use, and performance of marine chronometers. Drawings and photographs show various chronometers and parts: Models 4221, M21, M22, and M23, among others. Beyond chronometers, this series highlights Hamilton’s contributions to World War II through the Army-Navy E Award and “Tomorrow In the Making” - ...