OpenLegislation

Division 4

United Kingdom

Original text. Later amendments are not shown.

The apparatus Hennessy Grading probe shall be equipped with a probe of 5,95 mm diameter with an abutting blade of 6,3 mm containing a photodiode (Siemens LED of the type LYU 260-EO and photo detector of the type 58 MR) and having an operational distance between 0 and 120 mm.