see pic above
That pic really needs to have the meters jumping and the LEDs flashing
I had someone over the other day whom I was describing there was a time when
Meters and Leds were both in a transition phase's, he thought the M-4000 was the cats meow.
I hope you know what you have there!Picked my L-580 up for $40 at a garage sale. Not kidding. Didn't even want to go to the darn sale but I had to kill some time.