![]() ![]() Here is information on using the Military Grid Reference System (MGRS). Here is information on using the United States National Grid (USNG). Here is information on using the Universal Transverse Mercator coordinates (UTM). Here is a tutorial on using this type of tool. Using a slot style tool to plot/measure a 10m MGRS position Part Id: RoundGTAQuads, Made in United States, UPC: 824249150490 ![]() Large Print, Compass Rose in 90 Degree Quadrants Part Id: SuperGTA, Made in United States, UPC: 824249150063 Improved Military Style UTM/MGRS Coordinate Scale Part Id: RoundGTA, Made in United States, UPC: 824249150490 Round Military Coordinate Scale and Protractor Part Id: UTMSlot-TA, Made in United States, UPC: 824249000764 Part Id: GridsSheet, Made in United States, UPC: 824249000849 Locating Coordinate Grid Information on USGS Maps It's the size of a music CD, so it tucks away in more storage spaces.Larger 1:50,000 and 1:100,000 scale rulers for maps with wider grid spacing.Includes 1:24,000 scale for USGS 7.5 minute topographic maps.Rounded corners keep it from wearing holes in your pockets.It's 33% thicker than the standard military issue version, so it's less likely to be bent or broken when you need to use it. The tool is printed on plastic stock about the thickness and stiffness of a credit card, with a protective coating.Our coordinate scales offer significant benefits over the standard issue GTA 5-2-12: This makes reading the compass rose easier and also keeps the tool from "disappearing" when you place it on the map. The inner protractor is marked in degrees and the outer protractor is in mils.īands of white ink are printed under the two compass roses. Plus, the overall dimensions of the tool have been reduced so that it is the size of a music CD, easily fitting into a pocket or any slot where you could store a CD. The 1:100,000 scale now spans 5km grid lines, making it much more usable. The tool features several additional map scales, including 1:24,000, which is the most common topographic map scale found within the United States. By using a slot on one side of the tool for access to the map, the tool can be more compact than the traditional GTA tool. This tool is an improved version of the Graphic Training Aid 5-2-12 Coordinate Scale and Protractor used by United States and NATO military forces around the world. Neither the red lines, colored background, nor map image are printed on the actual tool. I also have lots of terrestrial compasses, including a few Bruntons - i never take them on a boat.Note: Product edges and interior cutouts are shown with a thin red line. But someone else may find the Vion -which is also very popular - more repeatable I am currently using the Plastimo Iris 50, and I like it. Then, simply draw a dot at the measurement. If you’re drawing an obtuse angle, use the scale numbers that are greater than 90°. If you’re drawing an acute angle, make sure you’re looking at the scale numbers that are less than 90°. i find the hockey puck to be the easiest to sight consistently the same way - and consistently sighting the same way is what gives good repeatability. Move up your protractor’s scale from 0° and find the measurement you want for your angle. I do think that in general, the prism hockey puck compasses give more repeatable measurements than pistol grip compasses., with autohelm-style electronic compasses somewhere in between, but closer to the hockey puck., and sometimes as good as the hockey puck. The main thing is that you want to be able to get repeatable numbers and if the model you choose doesn't work ergonomically for you, on the boats you sail on., your numbers won't be repeatable. I have several pistol-grip., hockey puck., and electronic - they each have advantages and disadvantages, although it's likely we wouldn't agree on what they are.įor that reason, you kind of have to find the one that works best for you in your own circumstances by just trying them out. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |