Perspective drawing apparatus

Perspective drawing machine

Perspective drawing machine

Perspective drawing machine

Perspective view apparatus

Perspective view drafting device

Plotting and drafting apparatus with magnetic guide

Plotting board with magnetic pivot

Portable drafting device for drawing parallel lines, comprising

Portable drawing apparatus

Portable drawing board for art students

Portable lighted drafting table

Protractable straight-edge with vise

Protractor unit for drawing-board

Protractor with a rotor

Rail type universal parallel ruler device

Rail type universal parallel ruler device

Ruler for fixed-distance movement

Rulers for making axonometric projection drawings

Ruling device for the blind