"OG Vase"
Egyptian Early Dynastic Granite Amphora Jar
2nd-3rd Dynasty,
c. 2900-2600 B.C.
Initial Analysis: 2017
Background
Traditionally Accepted Dating:
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2900-2600 B.C.
(Early Dynastic period)
The OG Vase was one of a group of 5 vessels analyzed using a GOM Blue Light Scanner in 2017 by Adam Young. This was the first time industrial grade metrology equipment was used to scan and analyze ancient Egyptian stone vessels using GD&T (Geometric Dimensioning and Tolerancing) standards. Over the past decade, the vase has made headlines across the world for its precision and design. While there are many questions still unanswered, the vase is evidence of a stone carving sophistication rarely seen in modern times, and a testament to the ingenuity of our ancestors.
Pictured on the rotating inspection table (right), the Red Granite Amphora Jar or "OG Vase" was found to exhibit exterior circularity tolerances as low as 0.0004 inches or 0.0094 mm.
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In fact the median circularity across the entire vertical (z-axis) of the vessel is approximately 0.0006 inches or 0.0162 mm.
This is remarkable given the visible wear and tear (surface damage) in several locations. Furthermore, granite contains feldspar and quartz; typically much harder than the groundmass material in which they are embedded. To this day, the manner in which such incredible precision was achieved remains a mystery.
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Over the subsequent years, this vessel and hundreds of others have become the central focus of the Artifact Foundation. Our team has scanned and analyzed artifacts using structured light, laser, infrared, photogrammetry, and computed tomography (CT Scanning) as shown below:
Computed Tomography Scan of the "OG Vase" using a Zeiss Metrotom 1500
Results
Surface deviation heat maps generated using Zeiss Inspect software.
Scroll down through the imbedded pdf to view all heatmaps
Interior cavity wall deviation heat maps generated using Zeiss Inspect software.
Scroll down through the imbedded pdf to view all heatmaps
Exterior Circularity statistics shown across the vertical (z-axis) of the vase.
click on the image to enlarge
Interior Cavity Wall Circularity statistics shown across the vertical (z-axis) of the vase.
click on the image to enlarge
Exterior Concentricity statistics shown across the vertical (z-axis) of the vase.
click on the image to enlarge
Interior Cavity Wall Concentricity statistics shown across the vertical (z-axis) of the vase.
click on the image to enlarge
