{"product_id":"rubert-331-microsurf-roughness-comparator-spark-erosion-edm-ra-0-4-50-0-m-rz-2-5-160-m-n5-n12","title":"Rubert 331 | Microsurf Roughness Comparator – Spark Erosion (EDM) | Ra 0.4–50.0 µm, Rz 2.5–160 µm, N5–N12","description":"\u003cp\u003eIntended for spark-eroded (EDM) surfaces, the Rubert 331 is a lightweight Microsurf (300 series) plate aimed at designers and office staff. Its 8 patches span Ra 0.4–50.0 µm and Rz 2.5–160 µm, roughness grades N5–N12, so both Ra and Rz can be read for each patch. It is supplied in a plastic wallet with an instruction card. For workshop use, the heavy-duty Series 100 equivalent is the 131.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eKey features\u003c\/strong\u003e\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eMachining method: Spark Erosion (EDM)\u003c\/li\u003e\n\u003cli\u003eNumber of patches: 8\u003c\/li\u003e\n\u003cli\u003eRa 0.4–50.0 µm, Rz 2.5–160 µm\u003c\/li\u003e\n\u003cli\u003eRoughness grades N5–N12\u003c\/li\u003e\n\u003cli\u003eLightweight Microsurf format in a plastic wallet with instruction card\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Rubert","offers":[{"title":"Default Title","offer_id":67656277327985,"sku":"331","price":0.0,"currency_code":"AED","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0625\/3930\/0977\/files\/microsurf.jpg?v=1791811103","url":"https:\/\/www.generaltechkuwait.com\/products\/rubert-331-microsurf-roughness-comparator-spark-erosion-edm-ra-0-4-50-0-m-rz-2-5-160-m-n5-n12","provider":"General Tech Services LLC","version":"1.0","type":"link"}