Abstract: A soil moisture sampling device (10) arranged to be beneath a workable crop soil surface for measuring the properties of soil moisture. The soil moisture sampling device comprises a moisture collector device (12) and an instrument enclosure (14). The instrument enclosure (14) contains a tipping bucket (38) arranged to receive water from a tube (24). The tube (24) contains measuring means (34) and the tipping bucket (38) contains magnet means (40). The arrangement enables water volume to be measured by the bucket (38) tipping when one portion (44 or 46) is full.