And also the diameter of Maxon industrial burner joint securing
Allen screws.
Again, don't look for any relationship to metric measurements, such as
4mm, in US stuff.
Ah, the old "It made sense at the time" and "We don't know, it's
just policy." explanation. Which makes sense, sort of, to someone.
Like I said "a silly question" and right up there with "Why do hot
dogs come eight to a package, but the buns come six to a package?" and
other conundrums.
tschus
pyotr
--
pyotr filipivich
Next month's Panel: Graft - Boon or blessing?
In this case, it may be that empirical testing has shown that 4mm-5/32"
grid spacing is the most user-friendly of the available options. It
might be worth your testing some close-but-different values to see if
they work as well.
Or not. It depends on how interested you are in solving your initial
question.
I think I need to rephrase my question:
In a decimal world, which I assume that SI is (he writes lounge in
cheek), a 4mm grid doesn't "fit". A 5mm grid works well, as two grids
equal 1 cm, and you can scale 2:10 for what ever results you want .
Two squares are a meter, a kilometer, an picometer, etc, and your
metric ruler will tell you that as your line is 5 cm long, so your
design is 2.5 meters/kilometers/picometers/whatsamatters. (You could
do the same with cubits, fathoms, furlongs, spans, or Smoots (q.vid)
but your ruler will still need to be metric: 5mm=1/2(unit), but I
digress.)
However with a 4mm grid, two squares do not equal a centimeter,
which means that 1 cm on my ruler is now 2.5 grid squares so I've lost
the 2 squares per unit relationship I have with a 5mm grid.
I suppose that I could use some other scale where 1 cm on paper is
2.5 meta-units in real life, but I can't see how that works out as
easier or simpler.
Which leaves me back to my original questions intent: what were
they smoking when they came up with this idea?
--
pyotr filipivich
Next month's Panel: Graft - Boon or blessing?
Back in the days before computers, software and printers/plotters took
over the world, results of tests and experiments were plotted by hand
onto graph paper. There it did not matter much what size the grids were;
much more important was the relationship between major and minor (and
sometimes intermediate) divisions and whether your results could
conveniently fit the size of paper. Decimal subdivisions were OK but if
you have ever tried plotting on grids where the subdivisions were by 4
then you too will have suffered!
Henry
Probably not universally - 4mm is extremely unusual. 1mm, 2mm, 5mm and
10mm are, as you might expect, more common.
5mm and 10mm are especially common in Yurp, used as school exercise
paper in France and elsewhere. People who used it to learn to write with
it - one letter per square - often continue to use it instead of lined
paper.
For some 5mm is too small, and 7mm, 7.5mm and especially 8mm squared
exercise paper is also available.
But 4mm is uncommon - perhaps if we knew where you bought it from their
customers might have a particular use for it?
-- Peter Fairbrother
+0100 typed in uk.rec.models.engineering the following:
I got it from my wife's stash, and she got if from a second hand
store. Hmm, maybe if I looked up the name on the cover... "Migros is
Switzerland's largest retail company, its largest supermarket chain
and largest employer." Well, that's interesting.
"Zellstoff elementar chlorfrei gebleicht" translates to "Pulp
elemental chlorine-free bleached" - wunderbar! Ack, the price has
gone up, was 2.5 now 3.10. Such is life.
I think, as I look about, this seems to be a size not for graphs,
but for writing in a grid. I had several such notebooks in Germany,
could write either way as the book filled up, or space required.
tschus
pyotr
--
pyotr filipivich
Next month's Panel: Graft - Boon or blessing?
"pyotr filipivich" wrote in message
I'm not looking for a relationship to imperial units, I'm looking
for a metric explanation why one would have a 4mm grid on the page.
tschus
pyotr
--
pyotr filipivich
Next month's Panel: Graft - Boon or blessing?
Up until he retired in 1980, my dad worked for a large paper manufacturer
and as a kid I can remember him bringing home "graph paper" with odd sized
grids. If my memory is correct they supplied it to professional model
makers. This being before 3D CAD they were employed by architects /
developers to produce quick mock ups of planned developments before making
the final 3D model. 1 to 76 scale is 4mm to the foot which is still
popular in the UK as it it is model railway 00 scale so that cheap models
of road and rail vehicles were readily available to populate the models of
large post war developments.
Nowadays you can print your own graph paper with any sized grids and
companies like https://www.printablepaper.net/ can supply the files to
print them from.
Alan
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