https://omeka-s.grinnell.edu/api/items/8670
type: Item
id: 8670
is public: true
owner: https://omeka-s.grinnell.edu/api/users/6
resource template: https://omeka-s.grinnell.edu/api/resource_templates/7
title: L. Bradley Circular Resistance Box
created: 2026-01-28T17:32:42+00:00
modified: 2026-01-28T17:32:42+00:00
media: https://omeka-s.grinnell.edu/api/media/8673
item set: https://omeka-s.grinnell.edu/api/item_sets/6290
site: https://omeka-s.grinnell.edu/api/sites/3
description: Circular resistance box manufactured by L. Bradley & Co. in Chicago. Patent date is Jan. 7, 1873. Construction of box consistent with 1870s technology. Box was probably used in trouble shooting telegraph or possibly telephone lines. We have no further information about the box.
identifier: em_311
is part of: Electricity_and_Magnetism
creator: L. Bradley & Co.
source: Storage Location F4a

https://omeka-s.grinnell.edu/api/users/6
id: 6

https://omeka-s.grinnell.edu/api/resource_templates/7
id: 7

https://omeka-s.grinnell.edu/api/media/8673
id: 8673

https://omeka-s.grinnell.edu/api/item_sets/6290
id: 6290

https://omeka-s.grinnell.edu/api/sites/3
id: 3