Thinker
DesignLiner is an innovative, modern multi-tool, stainless steel ruler that replaces the need for many other design sketching tools.
Support this project here: http://www.charleswilliamsco.com/
Updates:
There are now more circles on the large DesignLiners
There are 0-90 degrees written on the built in protractor.
The slot has been extended on the small DesignLiner to measure up to 15cm
The slot on the Large DesignLiner has been extended to measure up to 30cm.
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