New ways vs Old ways CNC vs manual

[SmithDoor]

Ah, but how can we use it?

FYI I have put in something about Knots if use Mile or someone will note Aircraft and Ships use Knots in America not miles


It call TEXT SHORTCUT
Here is screen shots to what look for other things found under the keyboard settings

Dave

 

[Richard Hed]

It call TEXT SHORTCUT
Here is screen shots to what look for other things found under the keyboard settings
View attachment 164093
View attachment 164094

Dave

I see. Sort of like that irritating "type ahead" that microsux does when using their expensive, bloated office programs. But in this case, you make your own. Very clever. Tell more.

 

[SmithDoor]

I see. Sort of like that irritating "type ahead" that microsux does when using their expensive, bloated office programs. But in this case, you make your own. Very clever. Tell more.

I think it is under HTML information. It works on groups.
I only little like change colors and few other thing.

Dave

 

[michael-au]

Have been using that for years, works well and is faster for frequently used words or phrases also with or with out emoji, on iPad or iphone

 

[SmithDoor]

Ah, but how can we use it?

Try find a good of codes on the internet. I look more tomorrow or put somethings of top head.

Dave

 

[SmithDoor]

I see. Sort of like that irritating "type ahead" that microsux does when using their expensive, bloated office programs. But in this case, you make your own. Very clever. Tell more.

Here list I use for group postings.
Could not find any thing on internet

Dave

 

[SmithDoor]

Someone will have made or demonstrate an astrolabe... (or whatever!). Next.
Or
The use of a plumb bob and square to make a level..
5000 years ago the use light - lines of sight - From stick to stick - to make straight lines (lines of sight) when they didn't understand light and eyes and thought the eyes projected beams to see. E.g. many temples and other monuments were accurately aligned to sun, stars, etc.


Fascinating!
K2

After lot of reading .
The difference between a Astrolabe and Sextant is not a lot.

The Sextant when first invented used the ocean for leavel. The Astrolabe used a type of plumbob.
But later with the Sextant the a spirit level and some a mercy mirror type. The Russian even used gyro type.

Just holding a machinist Level each line is 0.05 or 0.5 seconds.

The Navy say the Navigator can get 1½miles.
My Phone GPS is less than 10 feet. Which only use just see how ot works. I still use thd modern-day in-hand-navigation system aka . Hight lite between brackets for answer {- old fashione paper map printed of the computer-}.

The other uses for Sextant or Astrolabe is fine the Hight of buildings.

I also found out why almost any say to they took reading a high noon . Easier Calculation of location then DEAD RECKONING till next day at high noon.

Then it fun build one for ship engine and ship I plan building.

I also you a sundial for longitude and a good watch. A Sextant/Astrolabe will also work but more Calculation. I do have few slide rules if do not cheat and did not have a print book with tables.

Just keeping life simple.
Have any you thing of buildings to make life simpler

Dave

 

[SmithDoor]

Someone will have made or demonstrate an astrolabe... (or whatever!). Next.
Or
The use of a plumb bob and square to make a level..
5000 years ago the use light - lines of sight - From stick to stick - to make straight lines (lines of sight) when they didn't understand light and eyes and thought the eyes projected beams to see. E.g. many temples and other monuments were accurately aligned to sun, stars, etc.
Fascinating!
K2

{{ If no GPS **
** the choices }} ​

If GPS is taken by the sun or meteorite or little green men or Tee off Leader here choices.

I has looking internet on different between the Astrolabe and Sextant.

It mainly on how the Sextant work..

The photos below is both
The difference is Hight lite between brackets for answer ⏲ {- The MIRROR only is the difference & using the Horizon on some models -}

First photos is compared old one
***side by side of Sextant and Astrolabe ***
​

** Do you see any real difference?

[/B]

*************************

More photos off internet
Photos of the. Sextant.

Now ASTROLABE

Now

 

[SmithDoor]

I see. Sort of like that irritating "type ahead" that microsux does when using their expensive, bloated office programs. But in this case, you make your own. Very clever. Tell more.

Just talking to my son today about Navigation and Liquid Geometry .

I guess that would handy lost on ocean and need to how to go home.

Have any ond here ever use Navigation and or Liquid Geometry calculations?.

Dave

 

[SmithDoor]

{{ USING A SEXTANT }} ​

short movie on using a sextant.
Simple and easy to understand.
Sorrow of is in a zip file so can post it here

 

[Steamchick]

I had difficulty finding the sun when I used the sextant - once - when in the Navy.
Decca navigator was dead easy though! Radar over the horizon was difficult to interpret if it didn't see houses or cliffs on the coastline, but only hills and mountains beyond? Dead reckoning was OK for the ship through water, and tidal flow, but wind drift was bit of a sod to estimate! And recognising your position on a strange new coastline was difficult, so we sailed to aim 25 Km North of the port (inlet or river mouth) so we knew which way to turn when we reached the coast. (South). - it was 35 miles South, so we would have hit the coast and been just out of sight (a bit foggy, 2 mile visibility) and not known which way to turn if we hadn't aimed further away than predicted error by a good chunk. Like reducing machine cuts when approaching size!
I Stuck to engine room stuff. Easier to understand big blown 2-stroke diesels!
K2

 

[gbritnell]

I enjoy threads like this but I think the title of this one got lost somewhere.

 

[SmithDoor]

I enjoy threads like this but I think the title of this one got lost somewhere.

This title works .
Should keep first tilte .
It is fun subject .
It just part of engine on ship for me.

Just think of a aircraft carry or ships like Queen Marry need to use a Sextant or Astrolabe .
Today the US Navey is using on the nuke Aircraft carry Sextant as a backup to GPS.

Dave

PS
The main reason manufacturer like cnc lathe a programmer can program hundreds of lathes and the hire a person @ min wage to run 4 lathes at one time. All operator is how to chuck the part and push the go botton.

The Cox engine was made on automatic screw machines from bar stock starting in the 1950’s

 

[SmithDoor]

I had difficulty finding the sun when I used the sextant - once - when in the Navy.
Decca navigator was dead easy though! Radar over the horizon was difficult to interpret if it didn't see houses or cliffs on the coastline, but only hills and mountains beyond? Dead reckoning was OK for the ship through water, and tidal flow, but wind drift was bit of a sod to estimate! And recognising your position on a strange new coastline was difficult, so we sailed to aim 25 Km North of the port (inlet or river mouth) so we knew which way to turn when we reached the coast. (South). - it was 35 miles South, so we would have hit the coast and been just out of sight (a bit foggy, 2 mile visibility) and not known which way to turn if we hadn't aimed further away than predicted error by a good chunk. Like reducing machine cuts when approaching size!
I Stuck to engine room stuff. Easier to understand big blown 2-stroke diesels!
K2

When big cargo ships using 2 cycles engines I just think of model aircraft engines and my sorre finger .

Cargo ships back to the GPS is a Sextant too. Old ways still work.

If forget the check book back to Liquid Geometry calculations.
I think today in school they move the navigation to different subjects

Dave

 

[SmithDoor]

I enjoy threads like this but I think the title of this one got lost somewhere.

If look old Sextant you see the little things .
This first see very little details

A little closer

Now before the scope a Peep sight

Veneer is use for a Accuracy of 10 minutes

.

The Astrolabe is harder to get good photos

Dave P0VXD87EJS

 

[SmithDoor]

Here is a real Astrolabe not a reproduce.

Close upper right note the decisions.
The smallest mark is ½° you easily put it in between now doe to ¼° or 15 minutes.

⫷⸻❋Conclusion❋⸻⫸​

.
The old about same century

1. Sextant is 10 minutes within 11 miles on the open ocean
2. Astrolabe is 15 minutes or within 17 miles on the open ocean

*** The Navy using some best today is within 1½ miles or apx 1 minute


Dave

 

[Toymaker]

Someone will have made or demonstrate an astrolabe... (or whatever!). Next.
Or
The use of a plumb bob and square to make a level..
5000 years ago the use light - lines of sight - From stick to stick - to make straight lines (lines of sight) when they didn't understand light and eyes and thought the eyes projected beams to see. E.g. many temples and other monuments were accurately aligned to sun, stars, etc.
Fascinating!
K2

Here in Thailand, building construction guys use a length of clear plastic tube filled with water to insure their construction is level from point-to-point; no fancy lasers needed.

 

[SmithDoor]

Here in Thailand, building construction guys use a length of clear plastic tube filled with water to insure their construction is level from point-to-point; no fancy lasers needed.

Like your post
You Very good point

The water is far more accurate basically as good as your eye is.

Most think lasers are ever accuracy.
In most construction it is only ¼" in [6.35mm] 100 feet [30 meters]next jump 300 feet [90 meters].

When I was doing construction work my auto-leavel was accurate to 1/64" [0.04mm] in 2,000 feet [610 meters]

For distance a lasers is very accurate.

Dave

 

[Richard Hed]

Here in Thailand, building construction guys use a length of clear plastic tube filled with water to insure their construction is level from point-to-point; no fancy lasers needed.

In the Philippines we use that technique, but we put food coloring in it to see the level easier