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Hi Mike,
An alternative explanation is that almost all tyre manufacturers supply tyres
for almost all car manufacturers making industry standards necessary. Shortly
after WWII, the car manufacturing industry was dominated by the UK and US.
Wheel dimensions were
In inches. In the 1970's the industry went metric. Nuts and bolts were easy -
metric nuts and bolts already existed - the various imperial spec nuts and
bolts were phased out. Tyres were a different matter, the industry could not
afford to continue manufacturing imperial sized tyres for two decades for older
models while supplying metric sized tyres for newer models. However there is
some flexibility in rim width and a particular tyre could fit both a 6 inch rim
with an inner tube and a 150 mm rim which was tubeless. Hence the transition to
metric rims went hand in hand with the transition from using inner tubes to
using tubeless tyres.
Sent via BT Email App
From: Metricmike via USMA
Sent: Jun 22, 2025 at 6:32 AM
To: [email protected]
Subject: [USMA 2135] Re: Screen size computer monitors.
** Caution: EXTERNAL Sender **
I think there has been a compromise between the EU and the US on standardizing
worldwide Wheel Rim diameter in inches to fit tyres that have a height and
width in millimetres. But you notice with screens, the actual size is
millimetres.
Mike
On 22/06/2025 01:46, Ezra Steinberg via USMA wrote:
** Caution: EXTERNAL Sender **
Tire and wheel sizes, too?
On Sat, Jun 21, 2025 at 3:46 PM Stephen Humphreys via USMA
<[email protected]<mailto:[email protected]>> wrote:
** Caution: EXTERNAL Sender **
The use of inches for screen and projector size is universal.
Sent from my iPhone
On 21 Jun 2025, at 5:13 pm, csm--- via USMA
<[email protected]<mailto:[email protected]>> wrote:
** Caution: EXTERNAL Sender **
And Apple calls itself a technology company! I recently had to replace an
laptop. The one from HP that I bought was advertized at 15.9 inches.
Obviously the screen was 40 cm. Why didn't they just say so! As a
purist, it annoys me when units are mixed, some metric, some legacy.
============
On Sat, 21 Jun 2025, Metricmike via USMA wrote:
Hello All,
I notice frustratingly that Apple the electronics company, has screen
sizes in inches only (probably rounded to the nearest inch) worldwide on
their websites and in the stores, despite the fact that few people
outside North America and the UK use inches.
I was in Australia earlier this year getting a iPad for my brother and
all the screen sizes were in inches only, all over the store. I asked
why? It's an Apple policy apparently. Might as well have been in cubits
for all it meant to everyone under 60 in Australia. The person in the
store had no idea what the size was in millimetres nor how to convert it.
Submit your thoughts on this to Apple.com/feedback.
Mike Payne
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