Westcott ‎360-Degree Protractor Compass for Drawing and Drafting, Clear, 3.5 in

Compact and handy! Good quality and price!Westcott ‎360-Degree Protractor Compass for Drawing and Drafting, Clear, 3.5 in

The Westcott 3.5-inch 360-degree transparent protractor is ideal for use on topographic maps. The protractor is just the right thickness and easy to read. I use mine with a thin black fishing line running through the center (punch two small holes, one hole 1.0 cm above the center toward N and another hole at the center of the protractor, thread the line through the two holes, with a knot in the first hole and pass the thread through the center hole) to determine the direction angle from a starting position to destination. The same black line is then used to determine the distance to the destination with a map scale. I prefer this method rather than using a baseplate compass to determine the correct direction to a destination. It is accurate to about 1-degree if the protractor is aligned correctly from starting position to destination with the map’s parallel north/south lines. Simply adjust the compass to the degree that was determined and hike away with knowledge about distance and direction. This method is used in Great Britain, Austria, and Germany by various mountain and hiking clubs.

Perfect for what I intended it for!

I bought some of these for work. They are prefect for testing electronics with potentiometers. Many testing specs call for potentiometers to be set to different degrees of rotation, I drilled a small hole in the center for these to slide over the post.They are thin plastic but inexpensive, they are prefect for what I need them to do.

Staple of the job for Fire Detection (wilderness fire lookout), to transfer azimuth from Osborne Fire Finder to typo maps. The only drawback of this product (which is the ONLY product available today) is that this one does NOT have a small hole in center to thread a thin string through it for drawing out on your maps. Thus 4/5 stars.

Small yet well made, this protractor delivers in accurate readings. Perfectly round so it’s uses are really just for bearings and map use however no straight side means you will need an additional straight edge for plotting routes on maps but any mirror or baseplate compass has got that covered

Quality, Price and Service !!

I kept one of these on my kneeboard while an Army Aviator. It's so simple and yet so critical to have when determining a heading from a map while in route.