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If you're serious about accurate measurements, this Japanese combination square from Shinwa is the real deal.
Shinwa Sokutei is basically the king of measuring instruments in Japan – they've been making metal rulers since 1971 and they know their stuff.

This combo square has a 170mm total length, with a scale plate that's 100mm wide and 15mm thick.
Weighs about 178 grams – solid but not too heavy.


Accuracy is spot on – 90° angular accuracy is within 0.
1mm per 100mm, and 45° accuracy is within 0.

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Shinwa's stuff is used by builders, manufacturing pros, and inspection folks worldwide.
They're known for being user-friendly, durable, and reliable even in harsh environments.
This combo square is no exception – it's clean, accurate, and does exactly what you need it to do.
Whether you're laying out joinery, checking angles, or just marking straight lines, this is a tool you'll reach for again and again.

