TTC HTF-6S 6 Piece Hardness Tester File Set

The product is not worth the asking price. There are better options out there at the same level of quality!!!

for testing hardness it is quite important , this is a good reference point to see your parts final quality of harness or reference to replacement to same quality, works well , i even prooved my brother in law , in snowmobile parts quality of harness

Item came in nice package and was delivered within the timeframe stated. This set of tool is very helpful for checking hardness of parts/ tools in the workshop when a professional hardness tester is not available. The original instruction is in Japanese, but seller also includes a translated copy in English. Very thoughtful. Overall this is a good tool to be had in the home workshop, or for small family-own shops where having professional hardness testers are not practical.

If you have a printer, tape and know how the search engine works, then you know what to do! :) It's functional, that in and of itself adds value for the money. It's small, so the size is great for my work bench area that is already brimming with tools, so the small foot print is also a plus!

Zuverlassiger Liferant.Sehr gute Qualität.

While somewhat expensive, they are much cheaper than an actual Rockwell C hardness tester, and accurate enough for most machine shop needs. They are Japanese made. Use the tip to scratch or dig in to the metal piece in question. If it scratches or just digs in then your metal piece is softer on the Rockwell C scale. Move to the next lower probe until it does not scratch or dig in on your metal piece in question. You have now bracketed the hardness to within a 5 unit range on the Rockwell C scale. The whole process takes about 5 seconds per test range. Highly recommended for when tempering steel to a desired hardness, or when trying to identify the type and hardness of unlabeled scrap pieces.