Edge-On-Up PT50B Professional Sharpness Tester
Edge-On-Up PT50B Sharpness Tester A precise sharpness tester that measures the pressure needed to cut a test medium and displays the result on the BESS scale in 5 gram increments. Purpose Measure sharpness The Edge-On-Up PT50B is designed for sharpening enthusiasts, collectors, and anyone who wants to objectively evaluate knife sharpness. Result Balanced precision Measures the pressure required to cut a test medium and displays the result in grams. PT50B operates in 5 gram increments for practical accuracy. Included PT50B kit Includes PT50B tester, fulcrum support, and aluminum base with DoubleX test media. Compatible with test clip base. Comparison PT50 model differences Specification PT50A PT50B PT50C Resolution 1 g 5 g 25 g Measurement speed 25/sec 10/sec 5/sec Batteries 2 AAA 2 AAA 2 AAA Test clip base Included — Included Test clips 25 — 25 Aluminum fixture Included Included — Test media Included Included — Knife fulcrum Included Included Included Video See it in use Watch how the tester measures knife sharpness using the BESS standard. How it works Scientific sharpness testing The tester uses a certified synthetic wire. Apply pressure with the blade until it cuts through. The device records the force required and displays it in grams. Lower values indicate a sharper edge. Accurate testing requires certified materials. The DoubleX test medium allows up to 325 measurements. BESS Standard Clear numerical result The BESS scale ranges from 2000 (dull edge) to 0 (extremely sharp). A razor blade typically measures around 50. Testing method More accurate results Measure multiple areas of the blade — tip, middle, and heel — and calculate an average value for reliable results. FAQs Common questions Which test methods come with the PT50A Industrial Edge Tester? This one comes with everything you need to use BOTH the Aluminum Test Fixture with the Test Media AND a 25 count package of the Disposable Test Clips with the Clip Base. It essentially comes with everything possible. I've received my Edge On Up Tester and don't see the Test Media. What should I do? The Test Media is preloaded into the Aluminum Test Fixture. If you do not see a strand of media coming through one of the feed holes, slide the black rubber piece off of the bottom of the fixture. A role of Test Media should be inside. I've opened my New Edge On Up Tester and found a small empty box that says "Consumables." Should this box have something in it? No. The box will be empty. 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