<element name="index" type="positiveInteger">
  <annotation>
    <documentation>An integer value identifying the order of viscosity readings - eg. index = 1 is the first reading, index = 2 is the second, etc.</documentation>
  </annotation>
</element>

<element minOccurs="1" name="elapsedTime" type="diggs:TimeMeasureType">
  <annotation>
    <documentation>The elapsed time since the time of the origin of measurements</documentation>
  </annotation>
</element>

<element minOccurs="0" name="rotationalSpeed" type="diggs:AngularVelocityMeasureType">
  <annotation>
    <documentation>The rotational speed of the spindle at time of reading.</documentation>
  </annotation>
</element>

<element minOccurs="0" name="temperature" type="diggs:ThermodynamicTemperatureMeasureType">
  <annotation>
    <documentation>Temperature of the specimen</documentation>
  </annotation>
</element>

<element minOccurs="0" name="torque" type="diggs:MomentOfForceMeasureType">
  <annotation>
    <documentation>Torque at time of reading</documentation>
  </annotation>
</element>

<element minOccurs="0" name="viscosity" type="diggs:DynamicViscosityMeasureType">
  <annotation>
    <documentation>Viscosity at time of reading</documentation>
  </annotation>
</element>

<complexType name="ViscosityReadingType">
  <annotation>
    <documentation>Extended type based on AbstractMetadataPropertyType. Adds elements for viscosity reading type definition.</documentation>
  </annotation>
  <complexContent>
    <extension base="gml:AbstractMetadataPropertyType">
      <sequence>
        <element name="index" type="positiveInteger">
          <annotation>
            <documentation>An integer value identifying the order of viscosity readings - eg. index = 1 is the first reading, index = 2 is the second, etc.</documentation>
          </annotation>
        </element>
        <element minOccurs="0" ref="diggs:specimenRef">
          <annotation>
            <documentation>Pointer to the specimen used for this reading. Used when materials whose normal setting time is modified by prolonged agitation (this includes many silicate and acrylamide grouts). In this case, only one reading per specimen is taken, and multiple specimen properties are included in this procedure that are then used to define the viscosity-time data.</documentation>
          </annotation>
        </element>
        <element minOccurs="1" name="elapsedTime" type="diggs:TimeMeasureType">
          <annotation>
            <documentation>The elapsed time since the time of the origin of measurements</documentation>
          </annotation>
        </element>
        <element minOccurs="0" name="rotationalSpeed" type="diggs:AngularVelocityMeasureType">
          <annotation>
            <documentation>The rotational speed of the spindle at time of reading.</documentation>
          </annotation>
        </element>
        <element minOccurs="0" name="temperature" type="diggs:ThermodynamicTemperatureMeasureType">
          <annotation>
            <documentation>Temperature of the specimen</documentation>
          </annotation>
        </element>
        <element minOccurs="0" name="torque" type="diggs:MomentOfForceMeasureType">
          <annotation>
            <documentation>Torque at time of reading</documentation>
          </annotation>
        </element>
        <element minOccurs="0" name="viscosity" type="diggs:DynamicViscosityMeasureType">
          <annotation>
            <documentation>Viscosity at time of reading</documentation>
          </annotation>
        </element>
      </sequence>
    </extension>
  </complexContent>
</complexType>