diff --git a/src/blackmisc/pqacceleration.h b/src/blackmisc/pqacceleration.h
index 6c1d7ebe0..974a834d6 100644
--- a/src/blackmisc/pqacceleration.h
+++ b/src/blackmisc/pqacceleration.h
@@ -23,6 +23,8 @@ namespace BlackMisc
             CAcceleration(double value, const CAccelerationUnit &unit) : CPhysicalQuantity(value, unit) {}
 
             //! \copydoc CPhysicalQuantity(const QString &unitString)
+            CAcceleration(const QString &unitString) : CPhysicalQuantity(unitString) {}
+
             //! copydoc CValueObject::toQVariant
             virtual QVariant toQVariant() const override { return QVariant::fromValue(*this); }
 
diff --git a/src/blackmisc/pqangle.h b/src/blackmisc/pqangle.h
index bc73e9b5c..055d1e454 100644
--- a/src/blackmisc/pqangle.h
+++ b/src/blackmisc/pqangle.h
@@ -25,6 +25,9 @@ namespace BlackMisc
             //! Init by double value
             CAngle(double value, const CAngleUnit &unit): CPhysicalQuantity(value, unit) {}
 
+            //! \copydoc CPhysicalQuantity(const QString &unitString)
+            CAngle(const QString &unitString) : CPhysicalQuantity(unitString) {}
+
             /*!
              * \brief Init as sexagesimal degrees, minutes, seconds
              * The sign of all parameters must be the same, either all positive or all negative.
diff --git a/src/blackmisc/pqfrequency.h b/src/blackmisc/pqfrequency.h
index 44865ed88..8cabeb2b7 100644
--- a/src/blackmisc/pqfrequency.h
+++ b/src/blackmisc/pqfrequency.h
@@ -23,6 +23,8 @@ namespace BlackMisc
             //! Init by double value
             CFrequency(double value, const CFrequencyUnit &unit) : CPhysicalQuantity(value, unit) {}
 
+            //! \copydoc CPhysicalQuantity(const QString &unitString)
+            CFrequency(const QString &unitString) : CPhysicalQuantity(unitString) {}
 
             //! \copydoc CValueObject::toQVariant
             virtual QVariant toQVariant() const override
diff --git a/src/blackmisc/pqlength.h b/src/blackmisc/pqlength.h
index a0632402b..91b5ec90d 100644
--- a/src/blackmisc/pqlength.h
+++ b/src/blackmisc/pqlength.h
@@ -22,6 +22,9 @@ namespace BlackMisc
             //! Init by double value
             CLength(double value, const CLengthUnit &unit) : CPhysicalQuantity(value, unit) {}
 
+            //! \copydoc CPhysicalQuantity(const QString &unitString)
+            CLength(const QString &unitString) : CPhysicalQuantity(unitString) {}
+
             //! \copydoc CValueObject::toQVariant
             virtual QVariant toQVariant() const override
             {
diff --git a/src/blackmisc/pqmass.h b/src/blackmisc/pqmass.h
index d997d0d18..2c27494a0 100644
--- a/src/blackmisc/pqmass.h
+++ b/src/blackmisc/pqmass.h
@@ -24,6 +24,9 @@ namespace BlackMisc
             //! Init by double value
             CMass(double value, const CMassUnit &unit) : CPhysicalQuantity(value, unit) {}
 
+            //! \copydoc CPhysicalQuantity(const QString &unitString)
+            CMass(const QString &unitString) : CPhysicalQuantity(unitString) {}
+
             //! \copydoc CValueObject::toQVariant
             virtual QVariant toQVariant() const override
             {
diff --git a/src/blackmisc/pqpressure.h b/src/blackmisc/pqpressure.h
index f97a7d069..6cf2fc211 100644
--- a/src/blackmisc/pqpressure.h
+++ b/src/blackmisc/pqpressure.h
@@ -25,6 +25,10 @@ namespace BlackMisc
             //! Init by double value
             CPressure(double value, const CPressureUnit &unit) : CPhysicalQuantity(value, unit) {}
 
+            //! \copydoc CPhysicalQuantity(const QString &unitString)
+            CPressure(const QString &unitString) : CPhysicalQuantity(unitString) {}
+
+            //! \copydoc CValueObject::toQVariant
             virtual QVariant toQVariant() const override
             {
                 return QVariant::fromValue(*this);
diff --git a/src/blackmisc/pqspeed.h b/src/blackmisc/pqspeed.h
index aec4af4c8..60ecb3c9a 100644
--- a/src/blackmisc/pqspeed.h
+++ b/src/blackmisc/pqspeed.h
@@ -25,6 +25,8 @@ namespace BlackMisc
             //! Init by double value
             CSpeed(double value, const CSpeedUnit &unit) : CPhysicalQuantity(value, unit) {}
 
+            //! \copydoc CPhysicalQuantity(const QString &unitString)
+            CSpeed(const QString &unitString) : CPhysicalQuantity(unitString) {}
 
             //! \copydoc CValueObject::toQVariant
             virtual QVariant toQVariant() const override
diff --git a/src/blackmisc/pqtemperature.h b/src/blackmisc/pqtemperature.h
index 616790355..2ed01460f 100644
--- a/src/blackmisc/pqtemperature.h
+++ b/src/blackmisc/pqtemperature.h
@@ -24,6 +24,8 @@ namespace BlackMisc
             //! Init by double value
             CTemperature(double value, const CTemperatureUnit &unit): CPhysicalQuantity(value, unit) {}
 
+            //! \copydoc CPhysicalQuantity(const QString &unitString)
+            CTemperature(const QString &unitString) : CPhysicalQuantity(unitString) {}
 
             //! \copydoc CValueObject::toQVariant
             virtual QVariant toQVariant() const override { return QVariant::fromValue(*this); }