The Gold Prospectors Forum

Please login or register.

Login with username, password and session length
Advanced search  
collapse collapse
THE GOLD PROSPECTORS SHOUT BOX
Refresh History
  • Greywolf1: Well a few more sales coming in, looking better
    May 19, 2018, 03:26:48 PM
  • Greywolf1: 3rd time a bonus
    May 05, 2018, 12:58:04 PM
  • Wheels: 2nd try to the claim...fail
    May 04, 2018, 05:54:29 PM
  • juu907: MAY THE 4TH BE WITH YOU
    May 04, 2018, 09:01:51 AM
  • Wheels: How far up Moyie can you get from Lumberton fsr?
    May 03, 2018, 03:32:19 PM
  • Slats: Countdown is on!!! 39 days till I'm bound for the goldfields!!! That's something to shout about!!
    April 22, 2018, 07:10:40 PM
  • garth64: The sky here in alberta has a constand white haze all winter not sure whats going on.
    April 06, 2018, 02:55:11 PM
  • oilfieldsafety: This white stuff is never going to leave!!!
    April 06, 2018, 01:32:13 PM
  • juu907: WELL I GUESS I BETTER NOT PUT MUCH TRUST IN YOU AND PUT ON MY STEEL TOED BOOTS
    March 30, 2018, 05:58:30 PM
  • juu907: well i guess
    March 30, 2018, 05:56:35 PM
  • garth64: trust your gut jerry ,it will never let you down.
    March 30, 2018, 05:04:57 PM
  • juu907: Garth!  i lost the cords but not sure you can be trusted. i'd probably  be dropping the load on my toes.
    March 30, 2018, 03:24:03 PM
  • garth64: Once you have a look you will know a full charge is not required
    March 28, 2018, 05:20:27 PM
  • juu907: ill check em out if good i have the drone batteries on quick charge
    March 28, 2018, 09:08:57 AM
  • garth64: 6415'54.35"N14919'35.90"W   give it all ya got
    March 28, 2018, 09:00:07 AM
  • juu907: GARTH!! please send me your GPS coords.  n.k. fat boy is not the only one that is armed.
    March 28, 2018, 08:15:06 AM
  • garth64: Its ok jerry you can come clean here ok
    March 27, 2018, 04:29:17 PM
  • Greywolf1: Great way to see Monday start off, $1746.00 and climbing
    March 26, 2018, 07:18:57 AM
  • juu907: OUCH!!!!!!!!!!  i was thinking a member. guess not. that is a make my day sorta character. and now eric take it easy i dont give mouth to mouth to ugly ole dudes come to think of it. no dudes
    March 25, 2018, 06:02:51 PM
  • Greywolf1: David Suzuki the thieving bullsjit fake scientist
    March 25, 2018, 05:49:07 PM
  • juu907: garth you lost me. who is dave? jerry
    March 25, 2018, 03:45:41 PM
  • garth64: Lets follow the money in daves bank account, bet theres lots of none profit money sent his way.
    March 24, 2018, 08:06:51 PM
  • Greywolf1: Will gold spike today, waiting to see
    March 23, 2018, 12:16:54 PM
  • Greywolf1: Nope, on top of it, he wasn't even arrested, special treatment for the dickwad
    March 23, 2018, 07:12:28 AM
  • juu907: ill bet good money david and his buds didint walk to that gate to protest. likley burnt several gallons of gas or diesel.  BETS????
    March 22, 2018, 10:07:32 PM
  • Greywolf1: Banned in less that 24 hours, check out post that did it [link]
    March 22, 2018, 06:39:57 PM
  • juu907: we normally feed 100 grosbeaks untill april 15-17th this year it was march 17th and they are all gone. still 2' of snow. sure makes you wonder
    March 22, 2018, 11:27:27 AM
  • Greywolf1: Well starting to see some grass showing on lawn, and the driveway is clear and muddy, spring is getting closer
    March 22, 2018, 08:10:30 AM
  • juu907: seems pretty nerdy to us ole country boys kinda like that emc=2 thingy
    March 15, 2018, 04:09:46 PM
  • Hi Lo Silver: Pii's not nerd if you're referring to today being pii day.
    March 14, 2018, 03:26:44 PM
  • Greywolf1: Yer Welcome, someones got to do it
    March 14, 2018, 02:16:00 PM
  • juu907: HAPPY NERD DAY
    March 14, 2018, 09:57:02 AM
  • Greywolf1: Finally got it back sort of, still needs some doing [link]
    March 09, 2018, 12:10:00 PM
  • Greywolf1: Nice surprise to wake up to this morning, $1715.00 or so
    March 05, 2018, 07:27:12 AM
  • Greywolf1: Yahoo, broke through to $1705. and change, looks good
    March 02, 2018, 06:05:37 AM
  • Greywolf1: Here's to seeing Rogue in the spring, maybe he will have a pin pointer detector to check out Rudies claim
    February 28, 2018, 01:47:05 PM
  • Greywolf1: Well price og gold is sure getting the numbers up on forum, now if I wasn't snowbound, could sure stand getting out for  a bit
    February 27, 2018, 07:32:09 AM
  • graeme1955: Ive wondered why you have not been on fb I agree with you too many cryin types on there!
    February 20, 2018, 03:48:48 PM
  • Greywolf1: Side note, got Kennys SOW done up, dates changed, and file sent in, decent afternoon
    February 20, 2018, 03:25:33 PM
  • Greywolf1: Cause it's where we are sort of organizing to battle Princess Trudeau and the Muslim goat humpers
    February 20, 2018, 03:24:20 PM
* Board Stats
  • stats Total Members: 1240
  • stats Total Posts: 25840
  • stats Total Topics: 3684
  • stats Total Categories: 12
  • stats Total Boards: 67
  • stats Most Online: 451
* Info Ads
coast3 cma2 logo5 PAL
* The Gold Prospectors Forum Pictures


Panning Competition at Gold Show, Myself and Gold Commisioner
* Advertizing Links

Pages: [1]   Go Down

Author Topic: Map Scale & Google Earth  (Read 1211 times)

0 Members and 1 Guest are viewing this topic.

Geezir

  • Sr. Member
  • ****
  • Country: ca
  • Kudos: 19
  • Offline Offline
  • Posts: 312
Map Scale & Google Earth
« on: March 13, 2017, 02:09:16 PM »

Google Earth and scale
When asked to supply a map for exploration or mine site purposes the applicant is required to supply a map to a set scale. For example a BC NOW requires a 1:5000 for the site map.

You have Google Earth but the scale on the map is a scale bar so how do you find a 1:5000 or any other scale.

Map scales come in three major types.
STATEMENT OF EQUIVALENCY and also called a verbal scale
In this case a unit on the map is equal to a different unit on the map. One map inch is equal to one ground mile.

REPRESENTATIVE FRACTION and also a ratio scale
In this case both side of the ratio use the same unit. One unit on the map is = to X units on the map.

GRAPHIC and also called a Bar Scale
In this case a line on the map is equal to a given distance on the ground. (Google Earth)

Example in US, inch - foot - mile 1:63,360

REPRESENTATIVE FRACTION, one inch on the map is equal to 63,360 inches on the ground.

STATEMENT OF EQUIVALENCY, one inch on the map is equal to a mile. (63,360/12=5,280)

Example Metric
1:5,000
REPRESENTATIVE FRACTION, one cm on the map is equal to 5,000 cm on the ground.
 
STATEMENT OF EQUIVALENCY, one cm on the map is equal to 50 meters on the ground. (5,000/100=50)

How to translate the Google Bar to a ratio or REPRESENTATIVE FRACTION scale for your NOW

The Google bar is turned on or off in the View menu and as one zooms in from a global view it shows up at about 2500 km. The size of the monitor determines the length of the bar scale.

Move the Google page in and out by grapping the edge and you will see the bar change length.  Using a ruler with cm and change the size until the bar is at a set distance. On my screen (24") 8 cm is a good fit. Yours may be different.

At present the bar at 8cm long says 2048m
What scale is that? It is a the verbal statement of equivalency 8cm on map = 2048m on ground. To change that to ratio we need to use the same units.
2048m = (x 100) or 204800 cm 204800/8=25600 or 1cm = 25600cm or a scale of 1:25600
Note:
2048/8=256 or 1cm = 256m so time a 100 = 25600

But for our site plan we want 1:5000.
That means 1cm on the scale = 5000cm on the ground
5000cm = (/ 100) 50m so the 8cm line = 8x50=400
Zoom in until the bar scale is 400m and the map is at 1:5000
Logged
Without mines the greens would have no iPhones to complain about mining

Slats

  • Sr. Member
  • ****
  • Country: th
  • Kudos: 9
  • Offline Offline
  • Posts: 489
  • Mine time
Re: Map Scale & Google Earth
« Reply #1 on: March 14, 2017, 06:55:59 AM »

Good info. Thanks for that. 8)
Logged
Pages: [1]   Go Up
 

* Advertizing Links
* Recent Topics
Re: So Whats Happenin Folks by Wheels
[May 26, 2018, 08:12:03 PM]


Re: So Whats Happenin Folks by juu907
[May 25, 2018, 01:39:42 PM]


Re: So Whats Happenin Folks by Hi Lo Silver
[May 25, 2018, 11:47:18 AM]


Re: So Whats Happenin Folks by juu907
[May 25, 2018, 07:36:49 AM]


Re: So Whats Happenin Folks by Greywolf1
[May 24, 2018, 01:39:50 PM]


Re: So Whats Happenin Folks by Greywolf1
[May 24, 2018, 01:38:40 PM]


Re: So Whats Happenin Folks by Slats
[May 24, 2018, 08:49:51 AM]


So Whats Happenin Folks by Greywolf1
[May 24, 2018, 06:55:25 AM]


Re: Qualified Supervisor Ticket Needed by Hi Lo Silver
[May 20, 2018, 02:51:16 PM]


Re: Devils Canyon by juu907
[May 20, 2018, 09:46:50 AM]


Devils Canyon by Greywolf1
[May 20, 2018, 06:48:47 AM]


Re: big-su break down by Geezir
[May 19, 2018, 10:07:45 PM]


Re: big-su break down by Greywolf1
[May 17, 2018, 11:19:07 AM]


Re: Juu907 Videos by beav
[May 16, 2018, 04:10:17 AM]


Re: WATZIT by Slats
[May 15, 2018, 08:58:12 PM]


Re: WATZIT by juu907
[May 15, 2018, 01:40:17 PM]


Re: WATZIT by Slats
[May 15, 2018, 01:04:03 PM]


Re: WATZIT by juu907
[May 15, 2018, 10:22:24 AM]


big-su break down by juu907
[May 15, 2018, 10:15:10 AM]


Re: Juu907 Videos by juu907
[May 15, 2018, 09:38:20 AM]

* Calendar
May 2018
Sun Mon Tue Wed Thu Fri Sat
1 2 3 4 5
6 7 8 9 10 11 12
13 14 15 16 17 18 19
20 21 22 23 24 25 26
[27] 28 29 30 31

No calendar events were found.
* Advertizing Links
* Info Ads
1 ></a><script async src= Logo Northern 1"