diff --git a/vlsisapd/cif/CifCircuit.cpp b/vlsisapd/cif/CifCircuit.cpp
index a7cd9aae..e5da9268 100644
--- a/vlsisapd/cif/CifCircuit.cpp
+++ b/vlsisapd/cif/CifCircuit.cpp
@@ -8,7 +8,7 @@ using namespace std;
 
 namespace IO {
 
-CifCircuit::CifCircuit(string name) : _name(name) {}
+CifCircuit::CifCircuit(string name, string unit, double scale) : _name(name), _unit(unit), _scale(scale) {}
 
 
 bool CifCircuit::addPolygon(CifPolygon* polygon) {
@@ -33,6 +33,7 @@ bool CifCircuit::write(string filename) {
     file.open(filename.c_str(), ios::out);
     // Header
     file << "(CIF file written on " << date << " by IO_CIF_DRIVER);" << endl
+         << "(Units: " << _unit << "  -  UU/DB Scale: " << _scale << ");" << endl
          << "DS 1 1 1;" << endl
          << "9 " << _name << ";" << endl;
 
diff --git a/vlsisapd/cif/CifCircuit.h b/vlsisapd/cif/CifCircuit.h
index 32d09699..011d53ac 100644
--- a/vlsisapd/cif/CifCircuit.h
+++ b/vlsisapd/cif/CifCircuit.h
@@ -7,13 +7,15 @@ namespace IO {
 class CifPolygon;
 class CifCircuit {
     public:
-        CifCircuit(string);
+        CifCircuit(string name, string unit, double scale);
 
         bool addPolygon ( CifPolygon* );
         bool write ( string );
 
     private:
         string _name;
+        string _unit;
+        double _scale;
 
         std::vector<CifPolygon*> _polygons;
 };