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All rights reserved
This media item is licensed under "All rights reserved". You cannot share (i.e. copy, distribute, transmit) or rework (i.e. alter, transform, build upon) this item, or use it for commercial purposes without the permission of the copyright owner. However, an exception can be made if your intended use meets the "fair dealing" criteria. Uses that meet this criteria include research or study; criticism or review; parody or satire; reporting news; enabling a person with a disability to access material; or professional advice by a lawyer, patent attorney, or trademark attorney.
Attribution
Please acknowledge the item’s source, creator and title (where known)
Can you reuse this media without permission?No (with exceptions, see below)
Conditions of use
All rights reserved
This media item is licensed under "All rights reserved". You cannot share (i.e. copy, distribute, transmit) or rework (i.e. alter, transform, build upon) this item, or use it for commercial purposes without the permission of the copyright owner. However, an exception can be made if your intended use meets the "fair dealing" criteria. Uses that meet this criteria include research or study; criticism or review; parody or satire; reporting news; enabling a person with a disability to access material; or professional advice by a lawyer, patent attorney, or trademark attorney.
Attribution
Please acknowledge the item’s source, creator and title (where known)
Can you reuse this media without permission?No (with exceptions, see below)
Conditions of use
All rights reserved
This media item is licensed under "All rights reserved". You cannot share (i.e. copy, distribute, transmit) or rework (i.e. alter, transform, build upon) this item, or use it for commercial purposes without the permission of the copyright owner. However, an exception can be made if your intended use meets the "fair dealing" criteria. Uses that meet this criteria include research or study; criticism or review; parody or satire; reporting news; enabling a person with a disability to access material; or professional advice by a lawyer, patent attorney, or trademark attorney.
Attribution
Please acknowledge the item’s source, creator and title (where known)
This item was probably acquired for, and used by, participants in telegraphy at the Ballarat School of Mines courses between 1873 and 1893.
Physical description
An electromagnetic relay device on a brass base plate, and mounted onto a wood base. It is covered by a removable wood-framed glass sided cage. The item has four terminal posts and an adjustable conductor mechanism.