The original was a perspex, plasticard, brass, aluminium and wood beastie measuring 24 inches long, give or take an 16th of an inch.
Anyways, after much wailing and gnashing of teeth and about 3 months i was about to assemble the thing when i discovered that
people dropping in for a visit unannounced can have awkward concequences.
Too late, they spotted it and the pleading and mumbled 'want one' started.