Blackboard Marker

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This blackboard marker is a tool used to guide blackboard user while drawing horizontal, vertical and diagonal lines.

Keywords

leader, tool, marker, guide, ledger, blackboard, marker board

Galleries

School Supplies and Equipment

Source

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

Downloads

TIFF (full resolution)

2400×1832, 578.1 KiB

Large GIF

1024×781, 84.1 KiB

Medium GIF

640×488, 44.9 KiB

Small GIF

320×244, 16.8 KiB