Distributors of the "Ashdown" rotoscope , for determining speeds and making "slow-motion observations" ; "makes a slow-motion camera of the observer's eye" ; used in research laboratories , industrial research and manufacturing , government agencies , etc.
Includes:
Trade catalog
Black and white images
Physical description:
4 pieces; 1 box
Language:
English
Type of material:
Trade catalogs
Trade literature
Place:
New York City, New York, United States
Date:
1900s
Topic (Romaine term):
Industrial equipment or mechanical machinery (including supplies and components) Search this
Laboratories and laboratory supplies and equipment Search this
Measuring; calculating and testing devices Search this
