IRC "Resist-O-Guide" - Spence

A must have for the collector of old electronics, or maybe even still useful to someone.
About 110 x 50 mm, this is a small cardboard circular slide rule where you line up the colours from a resistor and it gives its resistance value in ohms.
The one I am offering is well used but a picture of a similar one in better condition (copied from the Internet) is shown below.

If no-one wants it it will go in the recycling

Jim
Spence