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Posted 20 hours ago

FECTAS 32pcs Ear Stretching Kit Acrylic Tapers & Surgical Steel Plugs Gauges (00G-24mm)

£9.5£19Clearance
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About this deal

The grading system is determined by the accuracy of the gauge in several measurements including the limit deviation of length and tolerance for the variation in length. For instance, a 10mm slip gauge may have a limit deviation of 0.12 microns at grade 0, but 0.2 microns at grade 1 and 0.45 microns at grade 2. As higher accuracy gauges are more expensive, it is important to only use the grade of gauge that is necessary, as the difference will be negligible to general workshop use. Custom gauges are available on request. This includes different tolerance classes for very specific or tight-fitting parts (e.g. H8, H9), as well as diameters to 3 decimal places of accuracy (e.g. 19.003mm) and different lengths. Up to 50mm diameter, plain plug gauges are double ended, meaning one end is a ‘go’ gauge (the gauge that should fit inside a hole) and the other a ‘no-go’ gauge (the gauge that should not fit inside a hole). Above 50mm, the gauge will consist of two separate bodies; one body containing the ‘go’ gauge and the other the ‘no-go’ gauge. Both the ‘go’ and ‘no-go’ gauge will be made of a hardened steel substrate (HRc60-62) and will typically be to a H7 tolerance. Slip gauges supplied by Cutwel are supplied as standard with a manufacturer’s calibration certificate. This informs the user that each gauge has passed the manufacturer’s internal tests which verifies that each gauge falls within a given tolerance (so if a gauge is 10mm it may have a deviation of 0.0001mm). The deviation will also be informed by the grade of the gauge.

Both steel and ceramic pin gauges can be supplied either individually or as sets with pre-determined sizes. Each set will contain a range of sizes and steps (could be either 0.1mm or 0.01mm steps depending on accuracy required). Pin gauge sets can be supplied in either 31, 41, 51 & 101 piece sets which will each cover a different diameter range. Standalone wooden boxes are also available should bespoke sized sets be required. In most workshop applications, steel slip gauges should be sufficient. They can be supplied with accuracy of up to 3 decimal places and are supplied to both workshop (grade 2) and inspection (grades 1 and 0) standards.Slip gauges can be calibrated to a UKAS standard, which is the United Kingdom Accreditation Standard by which all gauges are assessed. When inspecting a slip gauge to a UKAS standard, the inspector will simply allocate a ‘Pass’ of ‘Fail’ to the gauge depending if its measurements fall into a given tolerance. Besides steel pin gauges, ceramic pin gauges are also available. Ceramic pin gauges have the advantage of being extremely wear resistant, corrosion resistant and have superior dimensional stability. ceramic pin gauges are also used where steel gauges cannot be used (such as in food produce, medical and aerospace industries) due to the conductivity of metals. However, ceramic pin gauges can only be made to 2 decimal places of accuracy. In most general applications, alloy steel pin gauges will suffice and the extra cost of ceramic pin gauges would be unnecessary. As standard, pin gauges are made from a hardened alloy steel (hardened to HRc62-65). These pin gauges can be made to any size with up to 3 decimal places of accuracy from as small as 0.2mm up to 30mm. Hardened steel pin gauges conform to a grade 1 standard, making them ideal for both workshop and inspection-grade applications.

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