"Ron DeBlock" wrote in message
news

260: some kind of quarter-turn fastener?

Nope


261: this device embosses a seal/stamp on paper documents, a notary public
or town clerk would use it for the "official seal"

Correct, it's an embosser, but not for anything offficial


262: a mason's tuck pointing trowel, used to shape mortar joints between
bricks or blocks

263: first aid kit for venomous snake bites

264: a nail for fastening things (e.g. wood) to concrete

265: lathe parting tool bit holder

These four are all correct.