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Shinwa Precision Square with Base 300mm JIS Grade 2

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Shinwa Precision Square 300mm JIS Grade 2


Made in Japan, this high precision square is accurate, reliable and well made.

External Dimensions 300 x 200 x 25 mm

Accurate to better than 32 microns (1.25 thou)

Angle tolerance +/- (20 + ℓ / 10) μm where ℓ is the nominal length (mm) 

Annealed tool steel for maximum dimensional stability (not corrosion resistant)

Manufactured in accordance with Japanese Industrial Standards (JIS) B7526 Grade 2

Precision ground measurement surfaces

Please note: Unlike BS939 the Japanese engineering standard B7526 doesn't call for a burr groove at the internal corner.

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