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James Hartness
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James Hartness
James
Hartness
Year
1921
Subject
Engineering
Award
Longstreth
Screw Thread Comparator.
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Visit
Tickets
Plan Your Visit
Accessibility
Frequently Asked Questions
Daily Schedule
Museum Map
Getting Here
Where to Eat & Stay
Exhibits & Experiences
All Exhibits & Experiences
Wondrous Space
Body Odyssey
Hamilton Collections Gallery
Universal Theme Parks: The Exhibition
Upcoming Events
Events Calendar
Science & Education
Staff Scientists
Collection Highlights
Benjamin Franklin Resources
Scientific Journals of The Franklin Institute
Professional Development
The Current: Blog
The Franklin Institute Awards
About Awards
Ceremony & Dinner
Sponsorship
The Class of 2025
Call for Nominations
Case Files
Committee on Science & The Arts
Exhibit Resources for Educators
Next Generation Science Standards
Title I Schools
Neuroscience & Society Curriculum
Youth and Community Programs
PACTS
STEM Scholars
GSK Science in the Summer™
Children's Vaccine Education Program
Franklin @ Home
Podcast & Videos
The Curious Cosmos with Derrick Pitts Podcast
So Curious! Podcast
A Practical Guide to the Cosmos
Archives & Oddities
Ingenious: The Evolution of Innovation
The Road to 2050
Science Stories
Spark of Science
That's B.S. (Bad Science)
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Group Visits
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