artefacts: 50069
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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 50069 | 1988.0393.001 | Voltbox | WOODEN BOX & LID/ METAL HARDWARE/ SYNTHETIC KNOBS & TOP PANEL | 7581 | 726759 | Leeds & Northrup Co. | United States of America | Pennsylvania | Philadelphia | 1940 | 1949 | between | 1 | STAINED & VARNISHED WOOD/ BLACK KNOBS & TOP PANEL WITH WHITE PRINTING | USED IN CANADA | TO EXTEND THE RANGE OF POTENTIAL MEASUREMENT OF A POTENTIOMETER TO 10 100 OR 200 TIMES ITS MAXIMUM DIRECT VOLTAGE RANGE. | EXAMPLE OF MULTIPLIER USED TO EXTEND THE RANGE OF A POTENTIOMETER TO MEASURE ELECTROMOTIVE FORCE GREATER THAN 1.61 VOLTS | Energy-electric | Measurement | wood;synthetic;metal;paper | 26.2 | 16 | 15.5 | http://source.techno-science.ca/artifacts-artefacts/images/1988.0393.001.aa.cs.png | http://source.techno-science.ca/artifacts-artefacts/images/1988.0393.001.aa.cs.thumb.png |
