Here we have a lovely vintage sliding/ parallel ruler.

It's in good vintage condition, with the odd minor mark/ scratch/knock commensurate with age and use.A couple of the small screws are missing from underneath.

Measurements:

2 foot/ 61cm long

7cm wide

2.5cm tall

Any questions, please ask. Happy to provide more photos if required.Collection from Stroud, Gloucestershire is preferred, but can also post this item.