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Surface roughness comparator RU130

• Equivalent to SPI30-695-1
• This set consists of 30 comparison specimens, covering six of the most commonly-used machining methods: 6 cylindrically turned, 6 end-milled, 6 horizontally milled, 6 surface-ground, 3 lapped, 3 reamed/drilled.

Used for:

• checking roughness of turned, milled, ground, reamed, polished or lapped parts during machining
• checking the roughness of spark-eroded surfaces as described in the VDI 3400 Guideline
• checking the roughness of steel surfaces which have been prepared for painting by blast-cleaning, as outlined in ISO 8503
• estimating surface roughness prior to accurate measurement by a stylus instrument, as recommended in BS EN ISO 4288,
• checking the seriousness of damage to parts caused by nicks, dents and scratches
• checking reconditioned ship propeller blades

Rubert Specimens

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