An 'Electronic Circuit Master' or Vacuum Tube Voltmeter

Vintage Dixson Instruments Vacuum Tube Voltmeter. We do not have a model number on this unit. Because it has been worn off. It is in working condition.

Hewlett Packard Model 400 L Vacuum Tube Volt Meter. Overall good condition. Powers on. Approx. dimensions: 12 in. H x 7 in. W x 12.5 in. D. Weight: 17.6 lbs.

Grouping Of Scientific Instruments. Four Tube Light Engineering Co. Vacuum Tubes. Weston Model 280 Volt Meter, Tiny Tubes Of Crystolon

Details: This lot contains vintage and antique collectibles as shown in the corresponding images. This includes:- Radio vacuum tubes.- tobacciana.- View Master Stereoscope.- Slate pencils.- black san

Studio Master. Works. With box. With manual. Free pickup or we'll drop at the shipper for $3.

model 50 tube Turner model 50 C Master audio control control panel with meter and patch panel Dimensions: H 8.5" x W 14.5" x D 9" Condition: Wear from normal use.

Audio Research Phono2 Vacuum Tube Phonograph PreamplifierSerial #29304811 A two source phono preamp. With two sets of RCA input connectors on the inputs, and one set of BAL and one set of RCA output

Framed color screen print, "Universal Electronic Vacuum", 1967, signed lower right Eduardo Paolozzi (British 1924-2005), numbered 14/75, retaining ARCO collection label verso, image: 35"h, 23.75"w, ov

Moscode 600 Vacuum Tube Amplifier. Powers on. Approx. dimensions: 7 in. H x 16 in. W x 14 in. D. Weight: 44.4 lbs.

Moscode 150 Vacuum Tube Amplifier. Powers on. Approx. dimensions: 5.5 in. H x 17 in. W x 12 in. D. Weight: 26 lbs.

Rogue Ninety Nine Vacuum Tube Preamplifier with owner's manual and external power supply. Also with remote control.

Untested, with remote.

Engraved base. Filament tested - draws current but does not glow; no further testing done. See photos for codes. Dimensions: H 5" x Dia. 2"

Eastern Electric Mini Max DAC Vacuum Tube DA Converter, Untested.

(lot of 22) Vintage vacuum tubes for audio amplifiers, brands include: Chatham Electronics, RCA Radiotron Electron Tube, Tung-Sol, General Electric, Philips; all untested, 2.5lbs total (for shipping p

Filament tested at 6V; filament glows. No further testing done. Dimensions: H 4" x Dia. 2"

Filament tested at 6V; filament glows. No further testing done. See photos for codes. Dimensions: H 4" x Dia. 2"

Filament tested at 4.5V; glows fairly dimly. No further testing done. See photos for codes. Dimensions: H 4" x Dia. 1.75"

Filament tested at 6V; filament glows. No further testing done. See photos for codes. Dimensions: H 4" x Dia. 2"

United States,Early 20th Century Group includes two Western Electric 216A tubes, one VT2, one 215A, two deForest Audion tubes, and one with illegible markings on stem. Largest 4 1/4" x 2 1/8",Glass, m

Filament tests good; no further testing done. See photos for codes. Dimensions: H 7.5" x Dia. 2.5"

Filament tested good at 10V; glows and and draws the correct .32 amps; no further testing done. See photos for codes. Dimensions: H 4" x Dia. 1.5"

H 16" x W 22" x D 10.5"

Filament tested at 10V and works. No further testing done. See photos for codes. Dimensions: H 7.5" x Dia. 2.25"