Grip_MJ-F Mortar jigs: MJ-F MJ-F - Mortar Jig - Flexural The mortar jig – flexural is designed to provide for testing the flexural strength of mortar samples in the CON-2C range of testing machines. Specimen lengthSpecimen widthSpecimen heightMJ-F40160.00mm40.00mm40.00mm Standards EN 13279-2: Gypsum binders and gypsum plasters – Test methods EN 196: Methods of testing cement – Determination of strength