Видео ютуба по тегу Perkins Howe Press Compass

Sewell Raised Line Drawing Board: Creating a tactile circle graph with the Perkins HP Compass
Sewell Raised Line Drawing Board: Creating a tactile circle graph with the Perkins HP Compass
Sewell Raised Line Drawing Board: Drawing a Venn diagram with a Perkins Howe Press Compass
Sewell Raised Line Drawing Board: Drawing a Venn diagram with a Perkins Howe Press Compass
Sewell Raised Line Drawing Board: Drawing concentric circles with a Perkins Howe Press Compass
Sewell Raised Line Drawing Board: Drawing concentric circles with a Perkins Howe Press Compass