How can you tell the quality of a hardness tester you've purchased?

Taiwan Nakazawa Co., Ltd. answers for you:
1. The distinction of types, such as Leeb, Shore, Barcol, Micro-Vickers, Vickers, Rockwell, Brinell, etc. Currently, there are many types on the market, and their prices are different. When purchasing, choose the type based on the required environment and purpose; all of this needs to be clearly communicated and discussed with the sales customer service.
2. Brand reputation is a point that requires focused investigation. The quality of a product is reflected not only in the product itself but also in the attitude of the distributor. A good distributor will solve problems after discovering them, while problematic distributors are different; their negative reviews will increase, which means the problems they have exist without being resolved.
3. When conditions permit, do not reduce the step of trial use. After all, it will need to be used frequently after being purchased. If you do not try it out to understand it, problems such as finding it unsuitable or difficult to use after taking it home will exist, and then returns or exchanges will be needed; this has a significant impact on both the buyer and the seller.