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The Good Rule

The Good Rule - Metric Version

The Good Rule - Metric Version

Regular price $35.00 NZD
Regular price Sale price $35.00 NZD
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2 total reviews

The most innovative and well-thought-out tool made in New Zealand has been added to the line up Signature Tools a.k.a Top Class Gears NZ! 


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 centers


Fluoro green with red markings for maximum contrast (The Green Rule)

White with red markings for maximum contrast (The White Rule)

Black with white markings for maximum contrast (The Black Rule)


Hi-VIS colour to make it hard to lose and easy to find


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


Note: Though all accuracy and attention to detail is adhered to, the quick angle feature may 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 quickly finding a bend in a pipe, roof pitch guess, post brace cut etc...


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


NZ and AUS registered design.

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Customer Reviews

Based on 2 reviews