12" shrink/contraction ruler foundry/pattern Maker Rule Rabon Chesterman Vintage

Vintage Rayburn chesterman contraction rules with multiple contractions on each side

4 contractions in 1 ruler

1/77 contraction

1/38 contraction

1/96 contraction

1/48 contraction

In a great condition for a vintage rule

Please see photos

any questions please ask

post to UK mainland only

thanks for looking