If you are looking for blackboard and ditto machines, simply check out our links below :
1. Spirit duplicator – Wikipedia
https://en.wikipedia.org/wiki/Spirit_duplicator
blackboard
2. Duplicating machines – Wikipedia
https://en.wikipedia.org/wiki/Duplicating_machines
blackboard
3. The ditto is dead, and few mourn its passing – Seattle PI
https://www.seattlepi.com/news/article/The-ditto-is-dead-and-few-mourn-its-passing-1098579.php
References to the ditto machine, or the mimeograph, are likely to be … The chalkboard hasn’t yet surrendered the classroom to whiteboards …
4. School Blackboards Are Turning White and Interactive – The …
… a sixth-grade teacher at Blind Brook Middle School, the blackboard is a relic, of no more practical value than a slide rule or ditto machine.
5. 8 Technology Revolutions That Are Now Relics – Treehugger
https://www.treehugger.com/technology-revolutions-that-are-now-relics-4869033
blackboard
6. Gina Barreca: Not All Of Them Were The Good Old Days …
https://www.courant.com/opinion/op-ed/hc-op-barreca-the-old-days-werent-all-good-0203-20170201-column.html
Does anybody still use a ditto machine? … never used fold-out paper maps, whiteout correction fluid, pencil sharpeners or blackboard erasers.
7. Ditto machines [Archive] – Teton Gravity Research Forums
https://www.tetongravity.com/forums/archive/index.php/t-151460.html
34 authors
8. Elementary Education: A Reference Handbook
https://books.google.com/books?id=k9K8tuKdGNAC&pg=PA159&lpg=PA159&dq=blackboard+and+ditto+machines&source=bl&ots=viSfZMZTf3&sig=ACfU3U3e-CIjDfcirEjXr1XGx1zxyvzIlQ&hl=en&sa=X&ved=2ahUKEwjS78uR1q7uAhVmRzABHRLpBKwQ6AEwGXoECCoQAg
Education
9. Vocational Education Manual: A Handbook for Volunteers
https://books.google.com/books?id=ut6CENhtyDoC&pg=PA210&lpg=PA210&dq=blackboard+and+ditto+machines&source=bl&ots=IDl7WaAZgM&sig=ACfU3U2kqMcCAQzhpdvtoCLkD-7N36_L_w&hl=en&sa=X&ved=2ahUKEwjS78uR1q7uAhVmRzABHRLpBKwQ6AEwGnoECCsQAg
Vocational education
10. What were those terrible tissue paper copiers called in the …
https://boards.straightdope.com/t/what-were-those-terrible-tissue-paper-copiers-called-in-the-1970s/620556
I looked it up. The purple ditto machine was called a spirit duplicator. … Before that we would write exams on the blackboard. RealityChuck May …
11. History – Printing Services
https://www.print.iastate.edu/AboutUs/History/
1940’s Ditto Machine. Established nearly 100 years ago, in 1922, Iowa State University Printing Services operates and maintains facilities to fulfill the printing …
12. Easy Ways to Make Technology Work for You: From Grade Books …
https://books.google.com/books?id=4wb3IHdIjzIC&pg=PA12&lpg=PA12&dq=blackboard+and+ditto+machines&source=bl&ots=cfnktcSnsQ&sig=ACfU3U3iUdGj_JkbSQAoyYWCSudkJ7LWTQ&hl=en&sa=X&ved=2ahUKEwjS78uR1q7uAhVmRzABHRLpBKwQ6AEwHXoECCkQAg
Education