A fluid level indicator from Elesa-Clayton suitable for use with oil, water and glycol-based fluids. The Level indicators column is manufactured from Pyrex glass and fitted with a protective screen to protect from damage caused by accidental shocks. The graduations are printed on self adhesive plastic fixed to the aluminium rear support and resistant to oils and greases. The HCK-GL column level indicators can be used with the SLCK electric level sensors that simply fix onto the viewing window with the supplied bracket.