artefacts: 976
This data as json
| rowid | artifactNumber | ObjectName | GeneralDescription | model | SerialNumber | Manufacturer | ManuCountry | ManuProvince | ManuCity | BeginDate | EndDate | date_qualifier | patent | NumberOfComponents | ArtifactFinish | ContextCanada | ContextFunction | ContextTechnical | group1 | category1 | subcategory1 | group2 | category2 | subcategory2 | group3 | category3 | subcategory3 | material | Length | Width | Height | Thickness | Weight | Diameter | image | thumbnail | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 976 | 1966.0590.001 | Vacuum tube | GLASS/ SYNTHETIC/ METAL | R215A | Northern Electric | 1924 | 1940 | between | 1 | UNCOLOURED GLASS/ BLACK BASE | MADE & USED IN CANADA | USED AS AN AUDIO & INTERMEDIATE-FREQUENCY AMPLIFIER DETECTOR OR OSCILLATOR | FIRST REALLY SMALL TUBE DEVELOPED IN THE USA/ THE FIRST TYPE TO BE EQUIPPED WITH A MOULDED BASE | Vacuum Tubes | Telephone | Triode | glass;synthetic;metal | 6.3 | 1.8 | http://source.techno-science.ca/artifacts-artefacts/images/1966.0590.001.aa.cs.png | http://source.techno-science.ca/artifacts-artefacts/images/1966.0590.001.aa.cs.thumb.png |
