CHSI
Introducing Waywiser, the Collection of Historical Scientific Instruments online database!
Online visitors to the Department of History of Science may explore the Collection with this remarkable resource almost as if they were browsing through the shelves themselves.
Waywiser features newly revised descriptions of hundreds of objects accompanied by high quality photos which can be manipulated for an even closer look. Customizable search capabilities will greatly aid scholarly researchers, while students and more casual web travelers will enjoy the many fascinating elements of these often one-of-a-kind scientific artifacts. New records will be added on a regular basis, so return visits are a must.
Explore with 
Fragment of Babbage's First Difference Engine
(Inv. Number: 1991-1-0001a, Charles Babbage, England, 1822-1834, reassembled in 1886)
Resources
Gallery Hours
Putnam Gallery
Science Center 136
Monday through Friday
11:00am to 4:00pm
Summer hours may vary.
Special Exhibitions Gallery
Science Center 251
Monday through Friday
9:00am to 5:00pm
Summer hours may vary.
Free and open to the public.
Children must be escorted by an adult.
Both the Putnam Gallery and Special Exhibitions are closed on University Holidays.
Inquiries: 617-495-2779
Directions
The Collection of Historical Scientific Instruments is located inside the Science Center, 1 Oxford Street, on Harvard's Cambridge campus.
