Me 262 speedometer

[Customizer171]

Can someone explain to me why the speedometer in the Me 262 look like this.

I haven't seen it in any other aircrafts.

What I mean is the area around 400 km/h.

Why is there a "gap" that is black?

I read somewhere about IAS and TAS, has it anything to do with this?

Edited May 20, 2023 by Customizer171
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[iFoxRomeo]

100-400km/h scale is indicated airspeed

400-1000km/h scale is true airspeed

 

Two separate needles are built in and both can be seen at high altitudes

[Customizer171]

45 minutes ago, iFoxRomeo said:

100-400km/h scale is indicated airspeed

400-1000km/h scale is true airspeed

 

Two separate needles are built in and both can be seen at high altitudes

 

I understand, if looking really close at the picture it's actually possible to see both needles!