What do the meter markings mean?

[groundwire]

Just out of curiosity does anyone know what the markings on the lower right of this volt meter means? my higher end volt meters have some of these but this cheap chinese one has alot. I know the 2.5 is the accuracy (horrible). Whats your guess?

 

[brandon7861]

SYMBOLS IN ANALOG MEASURING METER & MEANING OF IT - METO

Electro Technological Officer (ETO) is a licensed member of the engine department of a merchant ship as per Section A-III/6 of the STCW Code. METO is a unique site dedicated to all ETOs. The aim of this site to provide accurate information about Marine Electro Technology used in Ships.

www.marineeto.we.bs

 

[groundwire]

SYMBOLS IN ANALOG MEASURING METER & MEANING OF IT - METO

Electro Technological Officer (ETO) is a licensed member of the engine department of a merchant ship as per Section A-III/6 of the STCW Code. METO is a unique site dedicated to all ETOs. The aim of this site to provide accurate information about Marine Electro Technology used in Ships.

www.marineeto.we.bs

Cool, well thats most of them. All thats left is the square bbq grill and the triangle. Hmmm???

 

[brandon7861]

I've only seen the triangle with ! in it, which I believe means read the manual. Not sure what the B means. The grill might be a symbol inducating shielding type, but I cannot find anything about that.