Coming late to my own party..
In the wake of overhauling Ardour's bar-graph meters, I've taken the time to implement corresponding needle-style meters and more.
meters.lv2 features 10 needle-style meters: Mono and stereo variants of DIN, Nordic, EBU, BBC and VU types (which are based on jmeters by Fons Adriaensen).
Additionally it includes a Stereo Phase Correlation Meter, an EBU-R128 Meter with Histogram and History display, a Digital True-Peak Meter, a Stereo Phase Scope (Goniometer), a 31 Band Spectrum-Analyzer and six K-meters (mono,stereo versions of the K12, K14 and K20 K meter-standard by Bob Katz).
Source-code, information and screenshots can be found at https://github.com/x42/meters.lv2
Alexandre Prokoudine has written a nice blog-post over at LGW and gave away a hard-copy of the “Audio Metering. Measurements, Standards, Practice” book by Eddy Brixen to celebrate the release.
meters.lv2 would not be what it is without the various contributions from Fons Adriaensen, David Robillard, Chris Goddard and Axel Müller. Thanks to Jaromír Mikeš they are already packaged in debian, part of the x42-plugins package.