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Rubert & Co Ltd - Type 130: Composite Set of Roughness Specimens
Condition
USED / EXCELLENT
Rubert & Co Ltd - Type 130: Composite Set of Roughness Specimens - Description
This set consists of 30 comparison specimens, covering six commonly-used machining methods (6 turned, 6 end-milled, 6 horizontally milled, 6 surface-ground, 3 lapped, 3 reamed/drilled. A label gives the Ra values of each specimen in both metric and imperial units.
The measurement of surface roughness is not as straightforward as most other engineering measurements, such as length or angle or hardness; and in order to get good accuracy, expensive instruments are needed. These are often unsuitable for workshop use, where roughness of machined surfaces can usually be assessed conveniently and with sufficient reliability using visual and tactile (fingernail) comparison with a standard set of surfaces machined in the same way.
These problems are solved by Roughness Comparison Specimens. They are simple to use, inexpensive, and hence widely used in many different applications.
Rubert & Co Ltd - Type 130: Composite Set of Roughness Specimens
- Typical Applications of comparison specimens
- 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, eg.
- checking the seriousness of damage to parts caused by nicks, dents and scratches
- checking reconditioned ship propeller blades
Rubert & Co Ltd - Type 130: Composite Set of Roughness Specimens Dimensions
Height 10mm
Width 155mm
Depth 80mm
Weight 0.15kg
The picture you are looking at of the Rubert & Co Ltd - Type 130: Composite Set of Roughness Specimens is the actual item you are buying, they are not downloaded or copied from any other source.


