Thread: Guessing Game Mk III : What Engineering Marvel is this.?

Sorry, Noel, not a piston ring expander.

Gizmo for placing cable marking rings, aka a three pronged expander.

Three prong pliers for expanding seleeves and grommets.
Heavy duty versions can expand plastic and light metal tubing

Yes, used for placing rubber sleeves over the end of cables before we had heat shrink. Mine are Heinemann brand and we used to call them "honeymoon pliers".

BU or Ron to take the helm now.

I have something at work I need to take a picture of and then post it.
I cannot do that until knock off time tomorrow.

I'll say "honeymoon pliers", or insulation pliers used for putting rubber sleeving over wiring as it enters soldered terminals. The fore-runner of heatshrink tubing. The sleeving came in several sizes and all the usual colours.

I personally don't own anything that could be considered an engineering marvel, otherwise I would have found it on the scrap metal cleaning up day. However I had a quick look for marvels on the intertoobs and found something that should last about a minute before being identified...

thingymajig.jpg

It's a type of lock (sp?) but instead of draining the lock and lowering the vessel to a lower river level, this one does it mechanically