Skip to main content
  • Utility Menu
  • Search
Harvard Logo
HARVARD.EDU

Collections Menu
  • Waywiser
  • People
  • Bibliography
  • Exhibitions
  • Thesaurus
  • My Object Lists
  • About
  • Sign in
Advanced Search
  • Home
  • Objects
  • contact key
  • Images (2)

contact key

  • Images (2)

contact key

Date: late 19th-early 20th Century
Inventory Number: 1998-1-1672
Classification: Contact Key
Subject:
electricity,
Maker: American ?
Cultural Region:
United States,
Dimensions:
2.5 × 9 × 5.2 cm (1 × 3 9/16 × 2 1/16 in.)
Material:
metal, brass,
Description:
Wooden base with three binding posts equally spaced atop the left hand length of the base. The lower-right and top left of the base have holes bored in it. Atop the center of the base is the key, a long metal rod with a knob at its end, restrained by a brass bracket above, and with a contact point on the base under the knob.

Signedunsigned
FunctionUsed to create and break an electrical circuit.
Curatorial Remarks

not in computer until 3.19.04. bem

Choose Collection

Create new collection

facebook iconTwitter Logo

_______________________________
Join Our Mailing List I Contact
_______________________________
The Collection of Historical Scientific Instruments
Science Center, Room 371 • 1 Oxford Street
Cambridge, MA 02138 •chsi@fas.harvard.edu
p. 617-495-2779 •
f. 617-496-5794
_______________________________
The CHSI is one of the

HMSC Logo

Exhibition Hours

The Putnam Gallery
(Science Center 136):
Monday through Friday, 11a.m. to 4p.m.


The Special Exhibitions Gallery
(Science Center 251):
Monday through Friday, 9a.m. to 5p.m.


The Foyer Gallery
Closed for Installation.

All galleries are closed on University Holidays.

Admission is free of charge.
Children must be escorted by an adult.

Admin Login
OpenScholar
Copyright © 2017 The President and Fellows of Harvard College | Privacy | Accessibility | Report Copyright Infringement

Choose Collection

Create new collection