rombikujulise püramiidindentori (laiuse pikkuse suhe 7:1) katsetatavasse materjali sisse surumise teel määratav mikrokõvadus (vt Knoopi kõvaduskatse, mikrokõvadus)
microhardness measured with a Knoop diamond indenter, an elongated rhombus pyramid (see: Knoop hardness test, microhardness)
Hea teada
Knoop hardness indenter contains a diamond with a rhombic base, so that the diagonals have a 1:7 size ratio, and included angles at the diamond edge of 130o and 172o30, .
