In article ,
Dave Hinz wrote:
On Fri, 04 Mar 2005 00:17:02 GMT, Dorothy and Richard Shelson
wrote:
Sorry to come in from left field but I need to ask. What IS a "posi
screw"?

Looks enough like a Phillips to confuse the unwary, but doesn't fit
a Phillips bit very well at all. Works excellent with the right
bits, though.

We have in Canada a Robertson screw which I am told does not
exist in the US.

We call that "square drive screws" here, the only people I've ever
seen call it the Robertson are Canadians (he was Canadian, I'd guess).

Robertson _invented_ em. Robertson is a *brand* name. Robertson gets
_really_ upset if somebody refers to "Robertson Screws" that are not
*manufactured* by Robertson. Robertson _is_ a Canadian Company.

Hence 'similar' screws by other manufacturers are called "something else".


You can get genuine Robertsons in the U.S., if you look in the right
places, but they are significantly more expensive than "something else".