Pencil hardness tester coating scratch hardness tester 500g three-in-one QHQ-A
USD 159.80 USD
Specifications
| Brand | Unbranded |
| Type | Pencil hardness tester |
| Model Number | QHQ-A |
Hardness of the series, the standard pencil from soft to hard 6B 5B 4B 3B 2B HB H 2H 3H 4H 5H 6H (a total of 13). 3, with the thumb and middle finger caught in the center of the two wheels. GB1279-79 "Preparation of paint film," the preparation of three pieces of test, usually a flat tinplate 120 50 (O.2-0.3) mm.
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