Back to Imperial

[Martin ConnellyParticipant @martinconnelly55370]

I spent a few years in my youth working behind a bar where the glasses were the oversize straight type with a line but they didn't have the crown or the words "Pint to line" or whatever the wording was since they were rejects (read cheap). We just filled them so the beer was over the line and with a head on top. Then they introduced measured half pints for Guinness. That, as I am sure you all know, takes an age to settle but we started to get complaints to the point where some of the bar staff had a pre-poured half under the counter to top it up. Where I worked has been demolished now but it was a venue where the Beatles played a number of times in the sixties.

Martin C

[Anonymous]

Posted by colin hamilton on 22/09/2021 14:24:36:

… practises were still dominated by American custom ….

…. not to mention spelling

[Anonymous]

Posted by Robin on 21/09/2021 10:14:21:

The problem with metric is that third digit on the DRO or digi-caliper.

+1

[Jon LawesParticipant @jonlawes51698]

Posted by Peter Greene on 23/09/2021 01:49:34:

Posted by Robin on 21/09/2021 10:14:21:

The problem with metric is that third digit on the DRO or digi-caliper.

+1

You think that's bad; whenever I try to work out anything using Pi I have to give up after just a few hundred decimal places.

[RobinParticipant @robin]

Posted by Jon Lawes on 23/09/2021 05:29:42:

Posted by Peter Greene on 23/09/2021 01:49:34:

Posted by Robin on 21/09/2021 10:14:21:

The problem with metric is that third digit on the DRO or digi-caliper.

+1

You think that's bad; whenever I try to work out anything using Pi I have to give up after just a few hundred decimal places.

I feel your pain. Unlike Gerber, AutoCAD defines an arc by angles rather than by end points, Stray from the cardinals and nothing quite fits

[SillyOldDufferModerator @sillyoldduffer]

Posted by Robin on 23/09/2021 09:56:43:

Posted by Jon Lawes on 23/09/2021 05:29:42:

Posted by Peter Greene on 23/09/2021 01:49:34:

Posted by Robin on 21/09/2021 10:14:21:

…

…

…

I feel your pain. Unlike Gerber, AutoCAD defines an arc by angles rather than by end points, Stray from the cardinals and nothing quite fits

Is that true? In my youth I failed to get on with AutoCAD because it had so many features that I didn't have time to explore, but many people rated AutoCAD highly. I found it difficult to navigate. Now I happily use QCAD for all 2D plans. Although simpler than AutoCAD, QCAD has ten different ways of drawing arcs only two of which require angles. I'm surprised AutoCAD doesn't do much the same: possibly other arc options are hidden behind a sub-menu?

I remember reading an article about AutoCAD in MEW or ME where the author reported lines not joining. I wondered if he was driving AutoCAD wrong, either by not selecting the right tool, or not setting the appropriate snaps. The latter are important and not always obvious.

Dave

[duncan webster 1Participant @duncanwebster1]

….

I remember reading an article about AutoCAD in MEW or ME where the author reported lines not joining. I wondered if he was driving AutoCAD wrong, either by not selecting the right tool, or not setting the appropriate snaps. The latter are important and not always obvious.

Dave

I think that was old versions of TurboCad, later ones have fixed this. Of course you can make anything misbehave by driving it incorrectly. Snaps are essential in my book.

[StueeeeParticipant @stueeee]

Posted by Colin Whittaker on 18/09/2021 04:54:04:

16 fl oz to a US pint and 20 fl oz to an imperial pint.

2 US pints to a US quart, 2 Imperial pints to an Imperial quart.

4 US quarts to a US gallon, 4 Imperial quarts to an Imperial gallon.

Having spent a bit of time in the US both working and holidaying, I found that many of the bars that sell British beer -yes there are some – often offered the option of a "20 oz glass instead of a 16 oz" -so a proper imperial pint- when I ordered. Unfortunate that the bitter was invariably over chilled, and the bartender occasionally would want to get a frosted glass out of the freezer to put it in, and would be nonplussed when I said that I wanted to taste the beer, so no frozen glass please.

I have an old Chevrolet pickup truck, of course, the "16 gallon tank" seems to be 3 or so gallons short 'over here'

On the subject of metric Vs. imperial, I did all my GCE O levels in imperial units including applied maths , and when I pitched up at college for day release as an apprentice, suddenly everything was metric. Took me a while to acclimatise to the lack of Poundals and Horsepower.

[RobinParticipant @robin]

Posted by SillyOldDuffer on 23/09/2021 11:12:12:

Posted by Robin on 23/09/2021 09:56:43:

Posted by Jon Lawes on 23/09/2021 05:29:42:

Posted by Peter Greene on 23/09/2021 01:49:34:

Posted by Robin on 21/09/2021 10:14:21:

…

…

…

I feel your pain. Unlike Gerber, AutoCAD defines an arc by angles rather than by end points, Stray from the cardinals and nothing quite fits

Is that true? In my youth I failed to get on with AutoCAD because it had so many features that I didn't have time to explore, but many people rated AutoCAD highly. I found it difficult to navigate. Now I happily use QCAD for all 2D plans. Although simpler than AutoCAD, QCAD has ten different ways of drawing arcs only two of which require angles. I'm surprised AutoCAD doesn't do much the same: possibly other arc options are hidden behind a sub-menu?

I remember reading an article about AutoCAD in MEW or ME where the author reported lines not joining. I wondered if he was driving AutoCAD wrong, either by not selecting the right tool, or not setting the appropriate snaps. The latter are important and not always obvious.

Dave

Lots of ways to draw an arc, the problem comes when you want to extract that arc in to your CNC to cut it.

AutoCAD gives you a dxf or drawing exchange file from which you can extract the drawing entities.

Lines have start and end co-ordinates.

Arcs have a centre coordinate, a radius, a start angle and an end angle.

I actually use the more affordabe ProgeCAD but sadly they rather lost the plot drawing tangential lines and arc with version 2019

[Michael GilliganParticipant @michaelgilligan61133]

Posted by SillyOldDuffer on 23/09/2021 11:12:12:

Posted by Robin on 23/09/2021 09:56:43:

Posted by Jon Lawes on 23/09/2021 05:29:42:

Posted by Peter Greene on 23/09/2021 01:49:34:

Posted by Robin on 21/09/2021 10:14:21:

…

…

…

I feel your pain. Unlike Gerber, AutoCAD defines an arc by angles rather than by end points, Stray from the cardinals and nothing quite fits

Is that true? […] Although simpler than AutoCAD, QCAD has ten different ways of drawing arcs only two of which require angles. I'm surprised AutoCAD doesn't do much the same: possibly other arc options are hidden behind a sub-menu?

.

I haven’t used any of the modern versions of AutoCAD, but even the early DOS versions were reasonably versatile.

This lot seems adequate: **LINK**

https://knowledge.autodesk.com/support/autocad/learn-explore/caas/CloudHelp/cloudhelp/2021/ENU/AutoCAD-Core/files/GUID-C78378FD-4704-4D0A-9D86-82FCBB118097-htm.html

MichaelG.

[Author]

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