diff --git a/slsDetectorGui/src/qTabAdvanced.cpp b/slsDetectorGui/src/qTabAdvanced.cpp
index 9efa24faf..0faad922a 100755
--- a/slsDetectorGui/src/qTabAdvanced.cpp
+++ b/slsDetectorGui/src/qTabAdvanced.cpp
@@ -124,7 +124,7 @@ void qTabAdvanced::PopulateDetectors() {
                SLOT(SetDetector(int)));
 
     comboDetector->clear();
-    for (int i = 0; i < myDet->getNumberOfDetectors(); ++i)
+    for (int i = 0; i < myDet->size(); ++i)
         comboDetector->addItem(QString(myDet->getHostname(i).c_str()));
     comboDetector->setCurrentIndex(0);
 
diff --git a/slsDetectorGui/src/qTabDataOutput.cpp b/slsDetectorGui/src/qTabDataOutput.cpp
index 58942a86f..da7b9d55b 100755
--- a/slsDetectorGui/src/qTabDataOutput.cpp
+++ b/slsDetectorGui/src/qTabDataOutput.cpp
@@ -80,8 +80,8 @@ void qTabDataOutput::PopulateDetectors() {
 
 	comboDetector->clear();
 	comboDetector->addItem("All");
-	if (myDet->getNumberOfDetectors() > 1) {
-		for (int i = 0; i < myDet->getNumberOfDetectors(); ++i)
+	if (myDet->size() > 1) {
+		for (int i = 0; i < myDet->size(); ++i)
 			comboDetector->addItem(QString(myDet->getHostname(i).c_str()));
 	}
 }
diff --git a/slsDetectorGui/src/qTabDebugging.cpp b/slsDetectorGui/src/qTabDebugging.cpp
index 936efcba5..a62373c50 100755
--- a/slsDetectorGui/src/qTabDebugging.cpp
+++ b/slsDetectorGui/src/qTabDebugging.cpp
@@ -55,7 +55,7 @@ void qTabDebugging::PopulateDetectors() {
 	FILE_LOG(logDEBUG) << "Populating detectors";
 
 	comboDetector->clear();
-    for (int i = 0; i < myDet->getNumberOfDetectors(); ++i) {
+    for (int i = 0; i < myDet->size(); ++i) {
         comboDetector->addItem(QString(myDet->getHostname(i).c_str()));
     }
 }
diff --git a/slsDetectorGui/src/qTabDeveloper.cpp b/slsDetectorGui/src/qTabDeveloper.cpp
index e62f5ac4c..7326740ad 100755
--- a/slsDetectorGui/src/qTabDeveloper.cpp
+++ b/slsDetectorGui/src/qTabDeveloper.cpp
@@ -124,8 +124,8 @@ void qTabDeveloper::PopulateDetectors() {
 
 	comboDetector->clear();
 	comboDetector->addItem("All");
-	if (myDet->getNumberOfDetectors() > 1) {
-		for (int i = 0; i < myDet->getNumberOfDetectors(); ++i)
+	if (myDet->size() > 1) {
+		for (int i = 0; i < myDet->size(); ++i)
 			comboDetector->addItem(QString(myDet->getHostname(i).c_str()));
 	}
 	comboDetector->setCurrentIndex(0);
diff --git a/slsDetectorSoftware/include/Detector.h b/slsDetectorSoftware/include/Detector.h
index c9f080aef..ae35ccbd6 100644
--- a/slsDetectorSoftware/include/Detector.h
+++ b/slsDetectorSoftware/include/Detector.h
@@ -205,7 +205,7 @@ class Detector {
      * Returns the total number of detectors in the multidetector structure
      * @returns total number of detectors in the multidetector structure
      */
-    int getTotalNumberOfDetectors() const;
+    int size() const;
 
     /**
      * Returns the number of detectors in the multidetector structure
diff --git a/slsDetectorSoftware/include/multiSlsDetector.h b/slsDetectorSoftware/include/multiSlsDetector.h
index 0383b3ea5..8fa7c3a55 100755
--- a/slsDetectorSoftware/include/multiSlsDetector.h
+++ b/slsDetectorSoftware/include/multiSlsDetector.h
@@ -381,7 +381,7 @@ class multiSlsDetector : public virtual slsDetectorDefs {
      * Returns the number of detectors in the multidetector structure
      * @returns number of detectors
      */
-    int getNumberOfDetectors() const;//
+    int size() const;//
 
     /**
      * Returns number of detectors in dimension d
@@ -872,10 +872,6 @@ class multiSlsDetector : public virtual slsDetectorDefs {
      */
     int getDataBytes(int detPos = -1);
 
-    /**
-     * Returns the number of detectors in the multi structure*/
-    size_t size() const { return detectors.size(); }
-
     /**
      * Set/get dacs value
      * @param val value (in V)
diff --git a/slsDetectorSoftware/include/multiSlsDetectorClient.h b/slsDetectorSoftware/include/multiSlsDetectorClient.h
index e370d4905..c627d1813 100755
--- a/slsDetectorSoftware/include/multiSlsDetectorClient.h
+++ b/slsDetectorSoftware/include/multiSlsDetectorClient.h
@@ -101,7 +101,7 @@ class multiSlsDetectorClient {
                 return;
             }
         }
-        if (parser.detector_id() >= detPtr->getNumberOfDetectors()) {
+        if (parser.detector_id() >= detPtr->size()) {
             os << "position is out of bounds.\n";
             return;
         }
diff --git a/slsDetectorSoftware/include/slsDetectorUsers.h b/slsDetectorSoftware/include/slsDetectorUsers.h
index 1b93f9445..734aabbc8 100755
--- a/slsDetectorSoftware/include/slsDetectorUsers.h
+++ b/slsDetectorSoftware/include/slsDetectorUsers.h
@@ -99,7 +99,7 @@ public:
 	 * Returns the number of detectors in the multidetector structure
 	 * @returns number of detectors
 	 */
-	int getNumberOfDetectors() const;
+	int size() const;
 
 	/**
 	 * Returns the maximum number of channels of all detectors
diff --git a/slsDetectorSoftware/src/Detector.cpp b/slsDetectorSoftware/src/Detector.cpp
index 7002fe296..014f14fd0 100644
--- a/slsDetectorSoftware/src/Detector.cpp
+++ b/slsDetectorSoftware/src/Detector.cpp
@@ -142,8 +142,8 @@ Result<std::string> Detector::getDetectorTypeAsString(Positions pos) const {
     return pimpl->Parallel(&slsDetector::getDetectorTypeAsString, pos);
 }
 
-int Detector::getTotalNumberOfDetectors() const {
-    return pimpl->getNumberOfDetectors();
+int Detector::size() const {
+    return pimpl->size();
 }
 
 defs::coordinates Detector::getNumberOfDetectors() const {
@@ -675,8 +675,8 @@ Result<bool> Detector::getAutoCompDisable(Positions pos) const {
 }
 
 void Detector::setPowerChip(bool on, Positions pos) {
-    if (on && pimpl->getNumberOfDetectors() > 3) {
-        for (int i = 0; i != pimpl->getNumberOfDetectors(); ++i) {
+    if (on && pimpl->size() > 3) {
+        for (int i = 0; i != pimpl->size(); ++i) {
             pimpl->powerChip(static_cast<int>(on), i);
             usleep(1000 * 1000);
         }
diff --git a/slsDetectorSoftware/src/multiSlsDetector.cpp b/slsDetectorSoftware/src/multiSlsDetector.cpp
index 4a451ba1d..843fb1f41 100755
--- a/slsDetectorSoftware/src/multiSlsDetector.cpp
+++ b/slsDetectorSoftware/src/multiSlsDetector.cpp
@@ -660,7 +660,7 @@ std::string multiSlsDetector::getDetectorTypeAsString(int detPos) {
     return sls::concatenateIfDifferent(r);
 }
 
-int multiSlsDetector::getNumberOfDetectors() const { return detectors.size(); }
+int multiSlsDetector::size() const { return detectors.size(); }
 
 int multiSlsDetector::getNumberOfDetectors(dimension d) const {
     return multi_shm()->numberOfDetector[d];
@@ -747,7 +747,7 @@ void multiSlsDetector::setDetectorOffset(dimension d, int off, int detPos) {
 
 int multiSlsDetector::getQuad(int detPos) {
     int retval = detectors[0]->getQuad();
-    if (retval && getNumberOfDetectors() > 1) {
+    if (retval && size() > 1) {
         throw RuntimeError("Quad type is available only for 1 Eiger Quad Half "
                            "module, but it Quad is enabled for 1st readout");
     }
@@ -755,7 +755,7 @@ int multiSlsDetector::getQuad(int detPos) {
 }
 
 void multiSlsDetector::setQuad(const bool enable, int detPos) {
-    if (enable && getNumberOfDetectors() > 1) {
+    if (enable && size() > 1) {
         throw RuntimeError("Cannot set Quad type as it is available only for 1 "
                            "Eiger Quad Half module.");
     }
@@ -2238,7 +2238,7 @@ void multiSlsDetector::setROI(int n, ROI roiLimits[], int detPos) {
         ymin = roiLimits[i].ymin;
         ymax = roiLimits[i].ymax;
 
-        if (getNumberOfDetectors() > 1) {
+        if (size() > 1) {
             // check roi max values
             idet = decodeNChannel(xmax, ymax, channelX, channelY);
             FILE_LOG(logDEBUG1) << "Decoded Channel max vals: " << std::endl
@@ -2885,7 +2885,7 @@ int multiSlsDetector::powerChip(int ival, int detPos) {
     }
 
     // multi delayed call for safety
-    if (ival >= 0 && getNumberOfDetectors() > 3) {
+    if (ival >= 0 && size() > 3) {
         std::vector<int> r;
         r.reserve(detectors.size());
         for (auto &d : detectors) {
diff --git a/slsDetectorSoftware/src/slsDetectorCommand.cpp b/slsDetectorSoftware/src/slsDetectorCommand.cpp
index 112fe18ed..c2a00202f 100755
--- a/slsDetectorSoftware/src/slsDetectorCommand.cpp
+++ b/slsDetectorSoftware/src/slsDetectorCommand.cpp
@@ -2175,7 +2175,7 @@ std::string slsDetectorCommand::cmdAcquire(int narg, const char * const args[],
     if (action == HELP_ACTION) {
         return helpAcquire(HELP_ACTION);
     }
-    if (!myDet->getNumberOfDetectors()) {
+    if (!myDet->size()) {
         FILE_LOG(logERROR) << "This shared memory has no detectors added. Aborting.";
         return std::string("acquire failed");
     }
diff --git a/slsDetectorSoftware/src/slsDetectorUsers.cpp b/slsDetectorSoftware/src/slsDetectorUsers.cpp
index 36f115d37..f4b83b178 100755
--- a/slsDetectorSoftware/src/slsDetectorUsers.cpp
+++ b/slsDetectorSoftware/src/slsDetectorUsers.cpp
@@ -4,8 +4,8 @@
 
 
 
-int slsDetectorUsers::getNumberOfDetectors() const {
-	return detector.getNumberOfDetectors();
+int slsDetectorUsers::size() const {
+	return detector.size();
 }
 
 int slsDetectorUsers::getMaximumDetectorSize(int &nx, int &ny){