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http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/361453bb29010d144829836240c9de6c.JPG image/jpeg thumbnail

Photonic Cell

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/dd82434b90d04221b6e9732eb0387864.JPG image/jpeg thumbnail

Photonic Cell

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/f9fbe0e625f38fbb88d04b46a1bc8d30.JPG image/jpeg thumbnail

Mounted Transcontinental Cable Section

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/ec2ecf1bdf8f0a1195a29c9c4d04cd59.JPG image/jpeg thumbnail

Telegraph Key CJB26003A

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/da9245a689d7543d200cc568c250fadc.JPG image/jpeg thumbnail

Telegraph Key Bakelite Base

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/d5df2d314561322772d246a583a58b51.JPG image/jpeg thumbnail

Telegraph Key on Metal Box

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/be307eac08e4e5f38dc8b9a52e7d0c87.JPG image/jpeg thumbnail

Telegraph Sounder

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/cc6154cdafcc8b53bf69089fa95cd0fd.JPG image/jpeg thumbnail

Cable with Many Wire Pairs

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/2b4fd619e6efd03f3a2605e85b6bcc14.JPG image/jpeg thumbnail

Black Rotary Dial

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/a9b1ff0f93ac9dc8c949e980b31bdba0.JPG image/jpeg thumbnail

Large White Rotary Dial

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/1b1e8a098778a394251f2e7b591d10f8.JPG image/jpeg thumbnail

Gray Keypad

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/780da879205d4792410b5a4117dd80a8.JPG image/jpeg thumbnail

Pair of Switches

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/0c59a7eefe41d96e49b589d47486e6ca.JPG image/jpeg thumbnail

Black Rotary Dial Desk Phone

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/4035ecbf9ef24032087ea7e03cf35d63.JPG image/jpeg thumbnail

Rotary Dial Wall Phone

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/e76fb4220455bf9e96237b3108cc6460.JPG image/jpeg thumbnail

Phone Receiver

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/ec1f3a7c977a47b6bc750d23798d4680.JPG image/jpeg thumbnail

Candlestick Phone ca 1900

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Candlestick Phone Modified for Dial ca 1900

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/f22dddd8ef9e46ca391ec3c4edd53d7b.JPG image/jpeg thumbnail

Microscope

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/3e5ab48f00e71ad854ea4beb9853d002.JPG image/jpeg thumbnail

Spencer Microscope 115833

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/7475e386152e818b5cac01d260fda8f4.JPG image/jpeg thumbnail

Solar Microscope

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/75cee3a0dadd748f3aa7b1de283e726b.JPG image/jpeg thumbnail

Microscope Polarizers

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/d578b29c5fdf980862021972cb16ae02.JPG image/jpeg thumbnail

Drawing Instruments in Leather Case

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/cd72173a19ca840a506282759ffbcee6.JPG image/jpeg thumbnail

6 inch Silicon Wafer with 386 Chips

http://omekax.grinnell.edu/PhysicsInstrumentMuseum/files/original/b155a2ad710d92eb11f07d9d0830f78d.JPG image/jpeg thumbnail

Grinnell College's First Adding Machine