105. Aerial Change-over switch, type J106. Oxygen flow indicator107. Transmitter T1154108. Aerial ammeter109. Base of fixed aerial mast110. Control panels 1 and 2111. Receiver R1155112. Morsing Key113. Intercomm. call lamp and push button114. Intercommunication socket115. Test socket ARI.5025116. Amplifier A1134117. Wireless operator's table118. Test cock-automatic controls119. Oxygen cut off valve120. Wireless operator's seat121. Floodlamp122. Mounting for indicator unit ARI.5025