| AC-Millivoltmeter Type 1808  | 
			1981 ?? | 
			Equipment | 
			13 | 
			3 | 
			  | 
			6S | 
			  | 
			  | 
		
	
		
		
			| Admittance Meter 1602-B   | 
			1960 ? | 
			Equipment | 
			 | 
			9 | 
			  | 
			7S | 
			  | 
			  | 
		
	
		
		
			| AF Transformer 231-A   | 
			1921  | 
			Radio part | 
			 | 
			10 | 
			  | 
			5S | 
			  | 
			$ | 
		
	
		
		
			| AF Transformer 285   | 
			1925  | 
			Radio part | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Air Condenser 120 A  | 
			1916 ? | 
			Radio part | 
			 | 
			2 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Amateur Band Frequency Meter 558-P  | 
			1935 ?? | 
			Equipment | 
			 | 
			4 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Amplifier 210  | 
			1930 ?? | 
			Ampl/Mixer | 
			5 - 26 | 
			 | 
			 | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Amplifier 250  | 
			1930 ?? | 
			Ampl/Mixer | 
			3 - 27 | 
			 | 
			 | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Amplifier 514-A  | 
			1931  | 
			Equipment | 
			3 - 230 | 
			2 | 
			  | 
			3S | 
			  | 
			  | 
		
	
		
		
			| Amplifier and Null Detector 1231-B  | 
			1948–59  | 
			Equipment | 
			4 - 1U4 | 
			1 | 
			  | 
			8S | 
			  | 
			  | 
		
	
		
		
			| Amplifier Transformer 585 585-D, 585-II, 585H  | 
			1928  | 
			Radio part | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Amplifier Unit Type 300 C  | 
			1923  | 
			Ampl/Mixer | 
			1 - WD11 | 
			1 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Amplifier Unit Type 300 D  | 
			1923  | 
			Ampl/Mixer | 
			1 - UV201A | 
			9 | 
			  | 
			1S | 
			  | 
			$ | 
		
	
		
		
			| Amplitude Modulation Monitor 1931-A  | 
			1949 ? | 
			Equipment | 
			 | 
			2 | 
			  | 
			11S | 
			  | 
			  | 
		
	
		
		
			| Audibility Meter Type 122  | 
			1919 ? | 
			Equipment | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Audio Oscillator 400 Hz 213-C  | 
			1930 ? | 
			Militar | 
			 | 
			5 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Audio Oscillator 813-A  | 
			1935 ? | 
			Equipment | 
			 | 
			4 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Audio Oscillator 1000 Hz 213-B  | 
			1920 ? | 
			Equipment | 
			 | 
			4 | 
			  | 
			5S | 
			  | 
			$ | 
		
	
		
		
			| Audio Oscillator 1311 (1311-A)  | 
			1962 ? | 
			Equipment | 
			8 - 2N1304 | 
			6 | 
			  | 
			8S | 
			  | 
			  | 
		
	
		
		
			| BC14A  | 
			1918  | 
			Galena | 
			 | 
			15 | 
			  | 
			  | 
			  | 
			$ | 
		
	
		
		
			| Beat Frequency Audio Generator 1304-B  | 
			1954 ? | 
			Equipment | 
			9 - 6SL7GT | 
			1 | 
			  | 
			6S | 
			  | 
			  | 
		
	
		
		
			| Beat Frequency Oscillator 700a  | 
			1940 ?? | 
			Equipment | 
			8 - 6J7 | 
			1 | 
			  | 
			2S | 
			  | 
			  | 
		
	
		
		
			| B Eliminator   | 
			1926 ?? | 
			Fuente-Al | 
			1 - BH | 
			 | 
			 | 
			1S | 
			  | 
			  | 
		
	
		
		
			| B-Eliminator Kit   | 
			1926  | 
			Kit | 
			1 - BH | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Bridge Oscillator 1330-A  | 
			1956 ? | 
			Equipment | 
			3 - 6AQ5 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Capacitance and Reactance Meter 421A  | 
			1943 ?? | 
			Equipment | 
			7 - 56 | 
			 | 
			 | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Capacitance bridge 716-c  | 
			1946  | 
			Equipment | 
			 | 
			1 | 
			  | 
			6S | 
			  | 
			  | 
		
	
		
		
			| Capacitance Bridge 1615-A  | 
			1964 ? | 
			Equipment | 
			 | 
			2 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Capacitance bridge 1617  | 
			1964 ?? | 
			Equipment | 
			 | 
			3 | 
			  | 
			6S | 
			  | 
			  | 
		
	
		
		
			| Capacitance Measurement Bridge 1614-A  | 
			1948 ? | 
			Equipment | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Comparison Bridge 1604-B  | 
			1953–56 ? | 
			Equipment | 
			 | 
			5 | 
			  | 
			2S | 
			  | 
			  | 
		
	
		
		
			| Constant Impedance Audibility Meter Type 164  | 
			1919 ? | 
			Equipment | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Counter GR-1192-B  | 
			1972  | 
			Equipment | 
			 | 
			2 | 
			  | 
			  | 
			  | 
			$ | 
		
	
		
		
			| Counter 1192B  | 
			1969  | 
			Equipment | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Coupling Impedance 369   | 
			1926  | 
			Radio part | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| DC Amplifier and Electrometer 1230-A  | 
			1964 ?? | 
			Equipment | 
			4 - 5886 | 
			4 | 
			  | 
			4S | 
			  | 
			  | 
		
	
		
		
			| DC Microvoltmeter-Nanoammeter 1807  | 
			1968 ?? | 
			Equipment | 
			 | 
			3 | 
			  | 
			8S | 
			  | 
			  | 
		
	
		
		
			| Decade Capacitor Unknown  | 
			1962 ?? | 
			Equipment | 
			 | 
			3 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Decade Capacitor 1419-A  | 
			1965 ?? | 
			Equipment | 
			 | 
			3 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Decade Inductor 1490-D  | 
			1968 ?? | 
			Equipment | 
			 | 
			3 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Decade Inductor 1490F  | 
			1968 ?? | 
			Equipment | 
			 | 
			3 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Decade Resistance Box 102G  | 
			1924 ?? | 
			Equipment | 
			 | 
			5 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Decade Resistance Box 602-D  | 
			1935 ?? | 
			Equipment | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Decade Resistance Box 602-E  | 
			1935 ?? | 
			Equipment | 
			 | 
			 | 
			 | 
			  | 
			  | 
			  | 
		
	
		
		
			| Decade Resistance Box 602-F  | 
			1935 ?? | 
			Equipment | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Decade Resistance Box 602-G  | 
			1935 ?? | 
			Equipment | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Decade Resistance Box 602-J  | 
			1931  | 
			Equipment | 
			 | 
			4 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Decade Resistance Box 602-K  | 
			1935 ?? | 
			Equipment | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Decade Resistance Box 602-L  | 
			1935 ?? | 
			Equipment | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Decade Resistance Box 602-M  | 
			1935 ?? | 
			Equipment | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Decade Resistance Box 602-N  | 
			1935 ?? | 
			Equipment | 
			 | 
			9 | 
			  | 
			  | 
			  | 
			$ | 
		
	
		
		
			| Decade-Resistance Unit 510-AA /-A /-B /-C /-D /-E /-F /-G /-R   | 
			1951  | 
			Equipment | 
			 | 
			1 | 
			  | 
			4S | 
			  | 
			  | 
		
	
		
		
			| Decade Resistor 1432-U /-K /-J /-L /-Q /-T /-N /-M /-P /-Y /-X /-Z  | 
			1951 ? | 
			Equipment | 
			 | 
			14 | 
			  | 
			4S | 
			1F | 
			$ | 
		
	
		
		
			| Decade Voltage Divider 1454-AH  | 
			1965 ?? | 
			Equipment | 
			 | 
			3 | 
			  | 
			8S | 
			  | 
			  | 
		
	
		
		
			| Decade Voltage Divider 1455-B  | 
			1967 ?? | 
			Equipment | 
			 | 
			6 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Digibridge Remote Test Fixture 1689-9605  | 
			1984 ?? | 
			Equipment | 
			 | 
			2 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Digital Impedance Meter 1685  | 
			1975 ? | 
			Equipment | 
			 | 
			4 | 
			  | 
			9S | 
			  | 
			  | 
		
	
		
		
			| Direct-Reading Wave-Meter Type 145  | 
			1919 ? | 
			Equipment | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Direct Reading Wave-Meter Type 174  | 
			1919 ? | 
			Equipment | 
			 | 
			5 | 
			  | 
			5S | 
			1F | 
			  | 
		
	
		
		
			| Direct-Reading Wavemeter 574  | 
			1925–42 ? | 
			Equipment | 
			 | 
			5 | 
			  | 
			2S | 
			  | 
			  | 
		
	
		
		
			| Distortion and Noise Meter 1932-A  | 
			1949 ? | 
			Equipment | 
			8 - 6J5 | 
			21 | 
			  | 
			17S | 
			  | 
			  | 
		
	
		
		
			| Distortion Factor Meter 536 A  | 
			1931 ? | 
			Equipment | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Doublet ID = 70579  | 
			9999  | 
			mod-pre26 | 
			 | 
			 | 
			 | 
			4S | 
			  | 
			  | 
		
	
		
		
			| Doublet with ID=220944  | 
			9999 ? | 
			Diversos | 
			 | 
			 | 
			 | 
			  | 
			  | 
			  | 
		
	
		
		
			| Doublet with ID=220944  | 
			9999  | 
			Diversos | 
			 | 
			 | 
			 | 
			  | 
			  | 
			  | 
		
	
		
		
			| Dublette mit ID=113261  | 
			9999/99  | 
			Equipment | 
			10 - 6C8G | 
			 | 
			 | 
			3S | 
			  | 
			  | 
		
	
		
		
			| Dublette mit ID=202993  | 
			9999  | 
			Radio part | 
			 | 
			 | 
			 | 
			  | 
			  | 
			  | 
		
	
		
		
			| Dummy Antenna 418-B  | 
			1931  | 
			Diversos | 
			 | 
			1 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Electronic Voltmeter 1806-A  | 
			1963  | 
			Equipment | 
			4 - 12AX7WA | 
			4 | 
			  | 
			8S | 
			  | 
			  | 
		
	
		
		
			| Filter 1231-P5  | 
			1961  | 
			Equipment | 
			 | 
			5 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Filter Choke 366   | 
			1926  | 
			Radio part | 
			 | 
			2 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Filter coil ?   | 
			1920 ?? | 
			mod-pre26 | 
			 | 
			5 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Frequency Meter 434-B  | 
			1931  | 
			Equipment | 
			 | 
			1 | 
			  | 
			2S | 
			  | 
			  | 
		
	
		
		
			| GenRad 1687 Megahertz LC Digibridge   | 
			1977 ? | 
			Equipment | 
			 | 
			7 | 
			  | 
			20S | 
			  | 
			  | 
		
	
		
		
			| GR874 to BNC male adapter   | 
			1950 ?? | 
			Diversos | 
			 | 
			2 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Heterodyne Frequency Meter 620-A [Portable Model] | 
			1937–53  | 
			Equipment | 
			 | 
			1 | 
			  | 
			18S | 
			  | 
			  | 
		
	
		
		
			| Heterodyne Frequency Meter 620-A [Rack Model] | 
			1937  | 
			Equipment | 
			 | 
			2 | 
			  | 
			15S | 
			  | 
			$ | 
		
	
		
		
			| Hudson Big 6  | 
			1926  | 
			Radio | 
			6 | 
			 | 
			 | 
			  | 
			  | 
			  | 
		
	
		
		
			| IET Output Power Meter 1840-A  | 
			1962  | 
			Equipment | 
			 | 
			1 | 
			  | 
			12S | 
			  | 
			  | 
		
	
		
		
			| I-F Amplifier 1216-A  | 
			1959–65  | 
			Equipment | 
			5 - 6CB6 | 
			5 | 
			  | 
			7S | 
			  | 
			  | 
		
	
		
		
			| Impedance Bridge 650-AP  | 
			1945 ?? | 
			Equipment | 
			3 - 6H6 | 
			6 | 
			  | 
			10S | 
			  | 
			$ | 
		
	
		
		
			| Impedance Bridge 1650-A  | 
			1959 ? | 
			Equipment | 
			4 | 
			3 | 
			  | 
			9S | 
			  | 
			  | 
		
	
		
		
			| Impedance Bridge 1656  | 
			1977 ? | 
			Equipment | 
			11 | 
			3 | 
			  | 
			17S | 
			1F | 
			$ | 
		
	
		
		
			| Impedance-Measuring Circuit 821A  | 
			1955  | 
			Equipment | 
			 | 
			2 | 
			  | 
			18S | 
			  | 
			  | 
		
	
		
		
			| Impedanz-Komparator 1681  | 
			1969  | 
			Equipment | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Medium Frequency Transformer 271  | 
			1924  | 
			Radio part | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Megohm Bridge 544-B  | 
			1937–61  | 
			Equipment | 
			 | 
			8 | 
			  | 
			23S | 
			  | 
			  | 
		
	
		
		
			| Megohm Bridge 1644-A  | 
			1964 ?? | 
			Equipment | 
			2 - 8380 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Megohmeter 487A  | 
			1943 ?? | 
			Equipment | 
			2 - 85 | 
			 | 
			 | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Megohmeter 544A  | 
			1943 ?? | 
			Equipment | 
			3 - 32 | 
			 | 
			 | 
			2S | 
			  | 
			  | 
		
	
		
		
			| Megohmeter 1862-B  | 
			1955 ?? | 
			Equipment | 
			5 - 12AU7 | 
			1 | 
			  | 
			15S | 
			  | 
			  | 
		
	
		
		
			| Megohmmeter 729-A  | 
			1940–53  | 
			Equipment | 
			1 - 1E5GP | 
			10 | 
			  | 
			2S | 
			  | 
			  | 
		
	
		
		
			| Metered Variac Autotransformer W5MT3W  | 
			1960 ?? | 
			Fuente-Al | 
			 | 
			4 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Microflash 1530A  | 
			1945 ? | 
			Equipment | 
			5 - 5T4 | 
			5 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Microphone Hummer (oscillator) 572-B  | 
			1933 ?? | 
			Equipment | 
			 | 
			3 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Microwave Oscillator 1360-A  | 
			1962 ? | 
			Equipment | 
			 | 
			1 | 
			  | 
			20S | 
			  | 
			  | 
		
	
		
		
			| Modulated Oscillator 484 & 484A   | 
			1933 ? | 
			Equipment | 
			2 - 230 | 
			15 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Modulated Oscillator 684-A [Battery] | 
			1937  | 
			Equipment | 
			 | 
			1 | 
			  | 
			  | 
			  | 
			  | 
		
	
		
		
			| Modulated Oscillator 684A [AC supply] | 
			1937  | 
			Equipment | 
			 | 
			1 | 
			  | 
			1S | 
			  | 
			  | 
		
	
		
		
			| Modulating Oscillator 403-C  | 
			1930 ?? | 
			Equipment | 
			2 - unknown_Tube | 
			1 | 
			  | 
			1S | 
			  | 
			  |