turning cylinder color changer (Q39061)
From CanonBase
first known color changer for electrical light
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | turning cylinder color changer | first known color changer for electrical light |
first known color changer for electrical light
| Language | Label | Description | Also known as |
|---|---|---|---|
| English | turning cylinder color changer | first known color changer for electrical light |