Circular Body Measure Tool

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This is a tool used to measure circular bodies, very similar to how current calipers work. This tool features a perpendicular ruler to the circular opening.


Government Printing Office Official Gazette (Washingon, DC: Government Printing Office, 1912)


TIFF (full resolution)

892×2400, 247.7 KiB

Large GIF

380×1024, 38.6 KiB

Medium GIF

237×640, 20.2 KiB

Small GIF

118×320, 7.5 KiB