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THE GOLD PROSPECTORS SHOUT BOX
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  • Greywolf1: Well I hope everyone that can be in the hills diggin, is havein a great Dominion Day celebration to boot
    May 20, 2017, 08:45:44 PM
  • Greywolf1: Gold $1712.00 and going higher
    May 17, 2017, 04:55:11 PM
  • Greywolf1: No a up note we still have Christy Clark as Preimer of BC after the election, so its all good for Gold Miners
    May 10, 2017, 06:59:29 AM
  • Greywolf1: $1734.50 even better
    April 28, 2017, 07:46:12 AM
  • Greywolf1: $1725.00 awesome times\
    April 18, 2017, 09:14:57 AM
  • Geezir: Been there done that! Seemed like the right thing at the time.
    April 17, 2017, 07:54:58 PM
  • D - Bar: My take: Get out the water pumps and get the Gold @ $1700.00 plus
    April 17, 2017, 02:51:39 PM
  • Hi Lo Silver: So it wasn't just me that was lost.
    April 17, 2017, 02:25:39 PM
  • juu907: guess i am missing something on adacan101's shout on water pumps
    April 17, 2017, 01:35:19 PM
  • Adacan101: water pumps
    April 16, 2017, 12:48:40 PM
  • Greywolf1: $1704.00 what can ya say to that
    April 11, 2017, 06:34:51 PM
  • Greywolf1: Just busy in shop is all, course toddies do come in handy
    April 09, 2017, 08:29:12 PM
  • juu907: no idea what you are talking about there greywolf. early toddy time maybe
    April 08, 2017, 10:16:51 PM
  • Greywolf1: Hair stright back and givin her,
    April 08, 2017, 06:37:32 PM
  • juu907: you asked for it Geezer. maybe we could could make a contest and see who finishes it 1st.  see below
    April 03, 2017, 01:56:45 PM
  • Geezir: How about a puzzle Jerry
    April 03, 2017, 12:16:01 PM
  • juu907: took me 3 days to figure out that northwoods was not a renegade out fit selling off a bunch of monetary companies rather than a hardware outfit selling your highbankers. keep em rolllin ERIC
    April 02, 2017, 08:56:21 PM
  • Greywolf1: Awesome, now Northwood is out of bankers, sold their last one this mornin
    April 02, 2017, 09:12:24 AM
  • juu907: parkers trail on tonight
    March 31, 2017, 05:57:41 PM
  • juu907: i agree. 4:30 is a bit early. i prefer 5:00
    March 30, 2017, 09:03:55 AM
  • Greywolf1: 4;30 is just too early in the morning
    March 30, 2017, 04:28:21 AM
  • juu907: 34 f. & 5" deep glue today
    March 29, 2017, 02:48:55 PM
  • Greywolf1: Gotta like seeing 1680.00
    March 27, 2017, 07:42:04 AM
  • Greywolf1: Just busy as all heck in shop these days
    March 21, 2017, 04:53:43 PM
  • ryanonthevedder: May is when things get serious, but April is when it starts in ernest
    March 19, 2017, 06:00:09 PM
  • moleman: Anyone know when the Fraser is set to flood
    March 19, 2017, 05:32:32 PM
  • EKgoldmining: Hi folks   from Ecuador
    March 19, 2017, 04:38:29 PM
  • Hi Lo Silver: Yes I sure do Jerry. Sounds like you have yourself more than enough fun.
    March 17, 2017, 06:09:17 PM
  • juu907: YIKES!!!!!!!!  she just informed she was going to take her new snowmachine and go pick up her kid.  helllllppppp
    March 17, 2017, 05:50:24 PM
  • juu907: today i created a monster. took my 5 year old grandaughter for her 1st ever snowmachine ride. now she has built one in the living room and has it fired up and roaring. you should remember her hi-lo growing up quite fast.
    March 17, 2017, 05:46:17 PM
  • Hi Lo Silver: Area of a circle  or Pi is 3.14 break that down to 3 month 14 day.
    March 15, 2017, 06:47:10 AM
  • juu907: OOPS MIGHT BE GOOD IF YOU EXPLANE IT TO THE REST OF THE GUYS.. BOY YOU GOT BETTER NEWS THAN I DO.  YAHOO JUST WENT DOWN THE TUBE SO NOW TIME FOR A CHANGE
    March 14, 2017, 08:16:12 PM
  • juu907: GUNTHER
    March 14, 2017, 08:12:55 PM
  • Hi Lo Silver: Oh nuts I was going to get on here to answer that when I saw it on the news. I see I'm too late now so ice cream and pi it is for me now.
    March 14, 2017, 06:50:41 PM
  • juu907: ok. get down to the glass house, pick up your favorite, take a couple more sips. now drop the e and add a decimal point. lets go i have to be in bed by midnight. somebody hop in and give eric a boost please
    March 14, 2017, 05:22:47 PM
  • juu907: i know nothing to do with gold but today is march fourteenth. so have another sip and and give me the answer
    March 14, 2017, 04:36:43 PM
  • juu907: pie  comprendy  sheesh
    March 14, 2017, 04:00:57 PM
  • Greywolf1: I don;t know, I looked at it, and it was confusing, so I had a sip, and it still was
    March 14, 2017, 03:15:26 PM
  • juu907: no math nerds out there
    March 14, 2017, 02:37:36 PM
  • juu907: SOOO. what desert is today named after?
    March 14, 2017, 09:28:26 AM
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Author Topic: Map Scale & Google Earth  (Read 322 times)

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Geezir

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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
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Slats

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Re: Map Scale & Google Earth
« Reply #1 on: March 14, 2017, 06:55:59 AM »

Good info. Thanks for that. 8)
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