Experimenting with IN-13 bargraph nixie tubes – Dr. Scott M. Baker
VU meter IN-13 - EasyEDA open source hardware lab
Audio Vu meter with IN13 or IN9 Russian nixie bargraph tubes
Nixie Tube Audio Meter :: Will Yager
Arduino LCD VU-meter
Adding stereo VU meters to a turntable - MichD
VU-meter by Archy
Audio Vu meter with IN13 or IN9 Russian nixie bargraph tubes
IN-13 Stereo VU-Meter – e ≈ π
4 LED VU meter LM324 under Repository-circuits -25273- : Next.gr
Audio Vu meter with IN13 or IN9 Russian nixie bargraph tubes
NOS IN-13 nixie tube VU meter bargraph FG28SB1 analog recording level | eBay
Audio Vu meter with IN13 or IN9 Russian nixie bargraph tubes
Volume Unit Measurement with LM3915 and LM3916 - EEWeb
VU-meter with nixie IN-13 - Share Project - PCBWay
2-PACK VU Meter DB Panel Sound Level Display & Driver Board for DIY Amplifier | eBay
IN-9 VU Meter - nixies.us
IV-9 VU Meter
Audio Vu meter with IN13 or IN9 Russian nixie bargraph tubes
IN-13 Stereo VU-Meter – e ≈ π
