Please help with circuit problem

please help me, anyone have the original circuit and descripton, i think in the frequency mode measurement error in the circuit.
thanks for help.

what, exactly did you think is an error in this schematic?

Adjusting glasses, what circuit?

there was a circuit diagram there on monday morning..... then the board was updated and it went away.... it's a cmos or TTL frequency counter, and i don't think the OP realized there was a ganged rotary function switch, and was just looking at the first layer of the switch that had the frequency and period contacts tied together.

what's the measurement error ?
Thanks
Eng Remon