Adjustable pivot angle square invention
Adjustable sheathing square
Adjustable squaring tool
Adjustable straight edged device for use with drafting board
Adjustable T-square
Adjustable template device for framing and cutting sheet materia
Adjustable template device for framing and cutting sheet materia
Adjustable template tool for stairways
Adjustable tool for cutting rafters
Adjustable viewing frame
Aeronautic chart removably attachable course and position locato
Aid for navigation, positioning and/or orientation
Aircraft navigational plotter
Alignment assembly and method
Alignment device for hand held cutting tools
Alignment device for use in welding
Alignment strut for wall structures
Alignment tool for clip angles
All-in-one drawing apparatus
Angle and distance measuring instrument