diff --git a/include/qpdf/QPDFObjectHandle.hh b/include/qpdf/QPDFObjectHandle.hh
index 6ca06ca..daa71fa 100644
--- a/include/qpdf/QPDFObjectHandle.hh
+++ b/include/qpdf/QPDFObjectHandle.hh
@@ -432,6 +432,10 @@ class QPDFObjectHandle
     void assertStream();
 
     QPDF_DLL
+    void assertScalar();
+    QPDF_DLL
+    void assertNumber();
+    QPDF_DLL
     void assertPageObject();
 
   private:
diff --git a/libqpdf/QPDFObjectHandle.cc b/libqpdf/QPDFObjectHandle.cc
index 43aa44b..73d0019 100644
--- a/libqpdf/QPDFObjectHandle.cc
+++ b/libqpdf/QPDFObjectHandle.cc
@@ -903,6 +903,18 @@ QPDFObjectHandle::assertStream()
 }
 
 void
+QPDFObjectHandle::assertScalar()
+{
+    assertType("Scalar", isScalar());
+}
+
+void
+QPDFObjectHandle::assertNumber()
+{
+    assertType("Number", isNumber());
+}
+
+void
 QPDFObjectHandle::assertPageObject()
 {
     if (! (this->isDictionary() && this->hasKey("/Type") &&