I hope that Pee Wee will forgive me by adding a bit of history to complement and compliment his excellent worksmanship.
Of interest, there are actually two sets of castings! They are described in the original G H Thomas book 'Building the Universal Pillar Tool' Actually I have a copy which I bought before GHT died. He also produced one called 'Dividing and Graduating'.
This- and mine are the Mark 2 version after some workers found the original arms closed up after splitting to form a clamp!
Of course, the write up appeared in Model Engineer prior to going to print as a book. It prompted someworkers to make fabricated ones by welding and another of my friends made up one from solid steel sections. It was exhibited on a Club stand at an exhibition.
Actually, I bought a welded one- prior to making up mine.
However, there is rather odd turn up. Several workers of a past generation saw the merits of the tool but couldn't afford the kit of castings etc.
Consequently, they salvaged connecting rods from BMC A Series engines( the old Minis, A30's etc) and used them as the mark 1 arms and saved a lot of work.