19-Band Microscope Test Plate, by F.A. Nobert, Germany, 1860s
|Inventory Number:|| 14571|
|Object Type:|| |
|Persons:||Friedrich Adolph Nobert|
|Brief Description:||Brass plate of 3-layer sandwich construction screwed together, with central circular glass. In later "Intal" brand cardboard box.|
This is the issue of test plate that Woodward resolved in 1869.
|Primary Inscriptions:||Engraved (or stamped?) "225'" and very lightly scratched "19".|
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