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Lake Master Maps


Duckman8

Question

On lake maps-most contain gps grid lines. My question is-is there a way to pinpoint a point that is between say 46 19.000 and 46 20.000 and 93 46.000 and 93 45.00? This is one small block, but how can you pinpoint better to find a specific point in this block? Is there a tool to better define this block down more or after this it is guess work? Example, a specific structure is located in this block and their is a inside turn located in this block that I want to find. What is the best way to locate it using a map and gps? I hope I explained this right. Any help is appreciated.

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If you are talking hard maps you can use a ruler or something else with lines on it and figure it out by doing the math. If you take on of your rectangles and make 10 evenly spaced marks on each axis for longitude and latitude it should work fine. When the first Wiffers came out I know guys that made little devices like this with clear plastic that matched the size of the grids. It is surprising how close you can get eyeballing it.

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I agree w/ 92python, make a scale. You will need to use two edges as the scale will be different north/south and east/west. Just mark out the closest 2 even marks given on the map, and divide that out to 10ths, or 20ths if you want double the accuracy. If you use clear plastic, etch a line on your mark and put a little more ink in it so it doesn't rub off during use. Make sure it is small enough to carry along, but large enough to span between marks or it's useless. Good Luck!

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I made up a conversion overlay in CAD and printed it out on transparent paper. I then set the overlay ontop of my map and can find out the coordinate almost instantly.

I measured the distance between the 2 longitude lines, and made 120 evenly space marks between them. Same with the Latitude. Since there are 60 degrees between each one, and I wanted a little more resolution, I went with 1/2 degrees, thus the 120 marks. Then, you can divide the degree by 60 to get your decimal point. So, the halfway point between the 46 19.000 and 46 20.000 would be 30 degrees or .500 so it'd be 46 19.500. You can use a ruler and do the math as well, I think using metric would be easier since it's in divisions of 10... If you had 56mm between each space, take 60 and divide it by 56 = 1.071429 of a degree. Divide that again by 60 to get your decimal version .0117857. Now you know that each MM = .017857. If your spot is 28 MM between 46 19.000 and 46 20.000 your actual coord would be 28 x .017857 = .5 (46 19.500). Remember to do this math on both longitude and latitude, because I doubt they are the same distances apart.

Hard to explain, but I hope this helps, even just a little.

If you want, you could email me (kylersk at yahoo dot com) the measurements (the more accurate the better) between your lines and I could make you an overlay as well.

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PAUL- I'm wondering where you got the print outs of Minnetonka with the different colors of Spring Bay that you handed out at the Tonka event?

Did you get it off the LakeMaster's CD you have? IF so, what version do you have because I didn't think their CD had Tonka on it confused.gif

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I had the hard map of Mille Lacs with the GPS Cords. on it. I plotted out my spots also with a grid. Problem with that map was they had flats on there map that weren't there! I bought the Lake Master Map and there found out the hard map was way off. With LMM where I punch in my GPS I drove right to the spot, it was so accurate. I hate to even say that because soon a secert spot will be no more! The 55 lakes program they have runs about $139. Well worth when you don't drive around looking for a flat that doesn't exist! Wouldn't you agree?

(my .02 cents)

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lakemaster does minnetonka in 1ft contours. I think it is in 3ft contours on the new pro -map cd.

Also the 1st question on the coordinates if you lfet click you can type in the gps spot and it will bring you there. Then right click and drag to where you want to go.

Anyone going to the walleye expo in Blaine this weekend.

I will have my own booth stop by.

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