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Datum Markers RS10 & RS11 self-adhesive Datum Markers RS20 & RS21 self-adhesive For construction sites without plastering work For ensuring the surveyed measurements are securely marked For ensuring heights and finished floor level (FFL) in door and window frames are securely marked For ensuring axes are securely marked Mounted in the formwork with negative impression in the concrete for axes and heights The RS10 & RS11 Datum Markers are also available in red without the inscription “Meterriss”. Article no. RS10r oM. and RS11r oM. For permanently ensuring the surveyed measurements are securely marked until after plastering work For ensuring heights and finished floor level (FFL) are securely marked until after plastering For ensuring axes are securely marked until after plastering The RS20 & RS21 Datum Markers are also available in red without the inscription “Meterriss”. Article no. RS20r oM. and RS21r oM. Datum Markers RS20 and RS21 after plastering work, the uppe