Microscopic analysis of bead drill hole
Scanning electron microscope photos of a molded impression of the drill hole indicate that the amazonite bead (8) was drilled with a tapered chert or jasper drill.
Electron microscope analysis of ancient Indus Valley finds
Electron Microscope analysis
Scanning Electron Microscope analysis of the incising marks on the steatite tablets indicates the use of three different specialized bronze graving tools (see 58). Each tablet was first shaped from raw unfired steatite and then incised with the
Electron microscope analysis
For the second group of tablets the leading edge of the incision is more rounded and there are grooves along the wide slope of the cutting angle. The third type of tool is equally distinct.