Adjustable straight edged device for use with drafting board

Aeronautic chart removably attachable course and position locato

Aid for navigation, positioning and/or orientation

Alignment device for hand held cutting tools

Apparatus for making perspective drawings

Apparatus for producing perspective drawings

Apparatus for use in connection with dry transfer lettering and

Articulated drafting device for drawing perspectives

Brake for drafting parallel

Cartoon drawing apparatus having an auxiliary positioning plate

Clamping device for straight edge

Control device for drawing instruments

Craft board assembly and method of use

Device for measuring an object across several axes

Device for pre-ruling printing forms

Drafting apparatus

Drafting apparatus

Drafting apparatus

Drafting apparatus

Drafting apparatus