10% Discount for two or more rules buy for a mate or as a spare
10% Discount for two or more rules buy for a mate or as a spare
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The Black Rule
The Black Rule
The Black Rule

The Black Rule

Regular price $33.00 $0.00 Unit price per
Tax included.

NEW STOCK ARRIVING around the second week in December. If you add your name to our mailing list (bottom of the home page) I will send out an email as soon as they arrive. Thanks for your patience.



Made to measure.

Inspired by old-school quality tools, The Good Rule is for you – the builder, the maker, the creator. Designed with dimensions that make sense for the way we build today, and made to help all your good ideas, cunning plans, and personal projects come together.




Standard width — 1/2 sheet + stud spacing + floor joist spacing



Framing timber and stud width — nogs + dwangs



Standard screw spacing — GIB + ply



Easy angle finder


5mm + 10mm ruler thickness for handy reference


0.5mm marked increments ideal for small accurate work


50mm highlighted increments for easy spotting


Center-line feature for measuring offset lines or splitting centres


Black with white markings for maximum contrast


The Good Rule is made of tough engineered ABS plastic with a hardy brass protractor hinge and brass pins.


Note: The quick angle feature though all accuracy and attention to detail is adhered to the angles will vary slightly between rules.

It’s a tricky little bugger to get right.

There are manufacturing limitations that we reach with this feature compounding the tolerances.

Printing is done through a printing process with a >0.5mm accuracy

The moulded parts have a >0.3mm accuracy

The brass hardware has a >0.3mm accuracy 

Use it like a bevel it is perfect for quick finding a bend in a pipe, roof pitch guess, post brace cut ect...


Designed in New Zealand, built to last, and made to unfold ideas. 


NZ and AUS registered design.