Where to look at while doing landing flap verification and check 3 times at ldg CL
 

While performing landing checklist of B737,
we call 3 times f30/f30/f30 for ex. But Where to exactly we need to look at to check?
1.flap indicator
2.??????????
3.flap lever

I dont know the second one.
Thanks in advance.

Not flying 737 but on the A320 we check the actual indication on the display and on the MCDU during taxi and only on the display during landing checklist (ecam memo).The flap lever not required except during preliminary cockpit preparation.

I was only on the B737 for a season and I can't fully remember now but there is a section on the overhead panel with a pattern of lights to indicate the leading edge flaps, as Boeing call them, are out.

I think that also indicated the actual (trailing edge) flap deployment as well ? I could be wrong, but that might be your third indicator.

Flap Indicator
Flap Lever
FMC / PFD for Flap vs Vref??

Surely your expanded checklist/procedure would say.