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Calculate Incremental Diminishing Lengths at Given Angle

Angle (Top)
Increment in

Enter Angle (Top) and select either Side Length, Center Length (height) or First Length (base width). Enter the Increment of each member (vertically in diagram)
If you don't know the top angle, but do know side lengths and first length (base width), enter measured side lengths, click Angle Slider to select and hit keyboard cursor keys to adjust angle and First Length (base width) to equal measured length.

Angle Increment Scale

Individual Member Lengths Mark-out

Running Gauge Center Mark-out

Running Gauge Angled Mark-out

Print and cut diagram to use as a template to mark cutting angle on boards and/or set bevel gauge. Or set bevel gauge directly from screen (mobile)

DON'T BREATH THE DUST If you're cutting blocks, concrete, stone or ANYTHING and there's DUST - DON'T TAKE THE RISK
Don't cut it, or cut it wet so there's NO DUST - Silicosis Sucks
And if you're cutting wet, wear a mask - theres dust in the spray too!

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Create PDF to print diagrams on this page. Help & Settings Printing Help (new window)

Copy all diagrams on this page to bottom of page - Make multiple copies to Print or Compare.

View page on Phone via QR Code (Not current calculation result)

Zoom out to fit large full scale template images on screen - or to adjust scale to match ruler held against screen
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Click Slider to select then use keyboard cursor keys to fine tune.
Fine tune Sliders

Printing Help
Help - Settings


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Check relevant local regulations for appropriate sizes, spacings and all engineering requirements.

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