Outer Limits 4x4 Board

How do i tell if my speedo is a cable driven or mechanical? i need a recalibration on it because ive gone from 31's standard to 35's and its out approx 15 %.
I hear i can get a box from marks adaptors but they need to know this.
they tried 2 explain to me but i couldnt find anything. Please help.

1990 D/C Hilux 4x4 2.4 Petrol swaped to 2.8 D

Mechanical or electrical? If you have a look on the transfer case you will see a cable drive for a mechanical speedo or a black plastic sender if it is electric. From memory I think it is on the right hand side of the case.

This is what the electrical sender looks like.

yeah thanks for that. ill have a look wen i get a chance. cheers