Anyone know correct size and source for a hubcap spanner for a 1914 10hp Model 607 Stanley? Ditto for the wheel bearing castle nut.

I have measured the across flats dimensions of the hubcaps on our car #7644 and they are an odd size, 1.582" to 1.590" A/F, - nearest imperial equivalant seems to be 1 19/32". My 1940s Machinery's Handbook does not seem to have a US standard size equivalanent either.

Suppose I can always get a good, large adjustable spanner for the hubcaps, but thought I'd ask first....