What's the difference between these two BH2 stands?

[TiggerScope]

Here are two BH2s with LED bar indicators that show the illuminator intensity. The indicators are set on the front bevel of the base. One consists of 5 LEDs reading 0 to 7. The other has 13 LEDs reading from 0 to 12. I'm afraid I don't know if they are one or both BHS. Also, roughly scaling by eye against each other using fixed-size references, e.g. condenser, on-off switch, the 0-12 has a 15-20% broader base.

The question is, of course, what significance this difference has. Is the 0-12 version, for instance, a BHS? Or was it an improved model from a certain date?

Many thanks,
Peter

0-12 lamp (Medium)a.jpg (102.93 KiB) Viewed 710 times

0-7 lamp (Medium)a.jpg (77.89 KiB) Viewed 710 times

[woyjwjl]

https://drive.google.com/file/d/1bC7gVC ... PxeK0/view

http://www.alanwood.net/olympus/downloads.html#bh

[TiggerScope]

Thank you, I had never seen the "Musings" document. It's great. The difference is clearly BHS vs. BHT, or 50W vs. 100W.