A compass is a navigational instrument that shows directions in a frame of reference that is stationary relative to the surface of the earth. The frame of reference defines true north, magnetic north, and grid north. Cheap compasses are mass-produced and are often of lower quality than more expensive models. They may not be as accurate, and they may not last as long. However, they can still be useful for general navigation.
A magnetic compass can be wrong if it is not properly calibrated or if the Earth's magnetic field is disturbed. Compass errors can also be caused by ferrous metal objects nearby.
A compass is a navigational instrument that shows directions in a frame of reference that is stationary relative to the surface of the earth. The frame of reference for a compass is the magnetic North Pole. The needle of a compass points to the north because the north pole of the magnet is attracted to the south pole of the earth's magnetic field. The angle between the needle and the frame of reference is the bearing. The answer to the question is no, compasses do not take you to your bed. Instead, they help you find your way by indicating magnetic north.
A compass does not always point to true north. This is because the Earth's magnetic field is not perfectly aligned with the Earth's rotational axis. The difference between the two is called declination, and it varies by location. You can find your local declination by consulting a map or online resource. To account for declination, you need to adjust your compass so that it points to true north.
4.9/5
$234
I got it because geometry class compasses often have a maximum measurement of 8 to 10 inches, and I needed to draw a precise 11 inch circle before cutting it out with a jigsaw. I was taken aback by how sturdy it was and how sharp the point was when it first came, right in front of the pencil holder. I tightened the screw and chose to scratch the circle rather than draw it on my board. I circled repeatedly while applying a lot of pressure, and the angle remained precisely where it should.
4.5/5
Adjusts to draw circles up to 12" diameter
Adjustable attachment works with pencils, pens, crayons and skinny markers
Easy grip top control
Metal compass with pencil
Draws arc with ease
$234
This is a wonderful, affordable tiny compass. I assumed it would be primarily plastic based on the photo, so I was very shocked to discover that it is almost entirely metal when it arrived. The top piece you grasp during spinning and the screw that secures the pencil are the only plastic components (the reason they lost one star). The plastic screw simply does not hold over time, if there is one thing I would like to complain about. It functions reasonably well, however after prolonged usage, the pencil starts to become a little unstable. Really, it should only be off by half a star. Just a tiny little irritant. Other than that, this is a great compass that can comfortably expand to circles as small as 4 cm and as large as 10 inches (possibly a little more, but that would be stretching it a little) (why you would need one that small I cannot imagine)
4.4/5
Professional Compass With Universal Adapter, Extension Beam For Math, Geometry, Art, Drafting And Drawing, Creates Circles Up To 18 Inches In Diameter
Precision Geometry Compass With Spring Bow Head And Center Wheel Accompanied Quick Setting Adjustment With Push Button Mechanism Prevents Unintentional Leg Movements
Packaged In A Clear, Reusable Pouch. Easy To Carry And Store
Premium Quality, Life-Time Satisfaction Guaranteed
10 Extra Lead, Spare Needle And Screws And Screw Driver
$234
Update: When I contacted the seller, he responded very quickly and took care of the issue straight immediately. Now that we have a functional compass, the problematic one must have been an isolated incident. When doing his geometry homework, my kid finds the part where you push both bottoms to quickly expand it to be quite helpful. In this method, he can expand or contract the leg quickly without touching the tiny dial.————-Old reviewI couldn't wait to get this for my son's geometry class. He was also. All of them, including refills, extra screws, a small metal plate to use as a screwdriver to tighten the screw for the leg that bends, and an additional leg to draw a large circle (although this isn't necessary for his class), are great. However, there is one small omission that makes using it a pain: the screw that tightens the legs to prevent them from bending. I am unable to tighten the screw before threading it because the screw head is so shallow. Naturally, I am unable to tighten it. As a result, when my kid used it, it kept bending as he pressed his point firmly into the paper to prevent the compass from slipping off. I instructed him to press down on the leg while holding onto the bottom portion of it.We're debating sending it back to see if we can find the right one to tighten the legs. However, the difficulty of it makes me sigh. It would be ideal if they could just replace the screw, assuming the screw can be replaced. The compass would have received five stars if all other features had been flawlessly functional.
4.4/5
EASY TO DRAW AND ADJUST - Lockable heavy duty drawing compass for repeat measurements or drawing arcs and circles.
MAKES STRONG ENGRAVINGS - Carpenter's scribe makes circles between 1/2" and 22" diameter for most of the materials.
WING DIVIDER WITH PENCIL HOLDER - Made from high quality carbon steel for professional use. Built like a tank!
100% SATISFACTION OR YOUR MONEY BACK - That’s our unconditional guarantee! If you’re not 100% satisfied with your purchase, we promise to offer you a prompt and full refund or ship you a replacement, so you can buy with peace of mind.
IDEAL DRAFTING COMPASS FOR WORKSHOP - Use as a professional carpenters compass for woodworking, carpentry, metalworking or leatherwork.
$234
Finding a compass that had positive reviews and appeared reliable enough to use for carpentry proved to be difficult. I decided to get these because they seemed promising. They exactly match the description.The points meet correctly for the zero radius and produce a good mark when used for scribing. It is possible to tighten the wing that locks the radius to ensure consistent results. The compass feels quite substantial, but the polish is not very bright, giving it a rough, dreary appearance. No need to worry about finger prints. The advantages are those.However, when a pencil is inserted, the point will not touch the steady arm, restricting the smallest circle as stated in the description. You should use a short pencil instead of the long one shown because the pencil is not firmly supported. Small adjustments to the radius are a little challenging because the compass is rigid, but overall, it's not too awful.The compass would be more appealing to me if it had pivot needles, as they would be sharper and replaceable in the event of damage.Overall, these are decent in a retail setting considering the price. I'd pick something else for drafting.
4.4/5
Can Be Used As A Scribe Or Divider To Quickly Measure And Copy Measurements
Professional All Metal Compass/Divider For Wood Work, Carpentry, Metal Work, Leather Work, Math, Etc.
Spring Tension And Lockable Sliding Nut Allows For Quick Leg Adjustment And Repeat Measurements
Made From High Quality Steel, I Will Not Rust Or Get Corroded
Pencil Holder To Easily Draw Circles Up To 19†In Diameter
$234
You need Adobe Flash Player to view this video.Download Flash Player.We bought my husband this compass because he needed one for his woodworking. He is quite impressed by how reliable, practical, and precise it is.
4.4/5
Size:high 7-7/10 inch,span 6 inch
For scribing arcs, gauging,dividing lines
Material:high steel
A high quality and durable leather working tools
$234
I draw lines around the edges of the leather pieces I'll be tooling with this compass. My tooling lines tended to wander too much before I purchased this. I can scribe a fine line at a consistent distance from the edge of the leather using this tool's sharp point. Today, my tooling looks much better.This tool's materials and construction are of the highest caliber, and with regular maintenance, it should last a lifetime. To anyone who needs a good compass, I wholeheartedly suggest this.
4.3/5
Essential set of 4 pieces
Portable, reusable wallet keeps your math tools clean
Clear math essentials make for easy use
Contains 6"/15cm ruler, 180 degree protractor, 45 degree and 60 degree triangles
$234
For my house, I'm planning a deck and some steps. I use 8 1/2 by 11 paper and complete it at my kitchen table. I don't always draw to scale, but sometimes I do. The architect scale and standard size 30 and 45 degree triangles are also included in this set, which helps me when I need to draw to scale. The set has been quite beneficial for my scale drawings. It's expertly made. It would be simpler to locate on the table if it were slightly tinted rather than clear, but that is a minor complaint given how useful I have found this set to be.
3.8/5
CARRY POUCH - Everything packaged nicely in reusable clear pouch for easy to carry and store.
PERFECT FOR KIDS AND ADULTS - Excellent for use in school, woodworking, or at home. The best circle drawing tool for student, artist, mathematician, carpenter.
100% SATISFACTION OR YOUR MONEY BACK - That’s our unconditional guarantee! If you’re not 100% satisfied with your purchase, we promise to offer you a prompt and full refund or ship you a replacement, so you can buy with peace of mind.
WITH PLENTY OF SPARE PARTS - OFFIZEUS compass comes with 9 spare leads, extra steel needle tip and spare holding screws and nuts.
PLEASURE TO USE STURDY SPRING BOW COMPASS - Adjustment wheel with automatic locking mechanism makes drawing easy and fun, you never want to return to plastic compass again!
$234
I've been looking for the greatest compass to survive students and time because I teach high school geometry. This appears to be it. I have been testing it since I acquired one. came with few more screws and lead, and it seems to lock into place securely. I'll shortly be placing additional orders for my class, and if they turn out to be less than amazing, I'll update here.To date, it has shown to be a superb compass.
3.8/5
6" compass can draw circles from .25" to 10" in diameter
Help students complete geometric drawing assignments
Straight-edge sides feature customary and metric scales
Perform all the functions of a standard compass without the dangerous point
Ages 8+
$234
I read every review before purchasing it. I bought it just for my bullet journal; I'm not using it for math. It works reasonably well; some dots are challenging to make the circle function, but for the most part, you can make the majority of it work with persistence and expertise. I examine the cost and decide that it delivers just enough for me to find it to be worthwhile. When I only needed it for my bullet journal, I wasn't going to spend $20.00 or more on the better ones; I can get by with this. In order to decide whether you can get by or if you need a more expensive one in order to acquire quality for school, job, etc., you must think about what you plan to use it for. This was exactly what I needed and desired for myself.
3.6/5
Precision Geometry Compass With Spring Bow Head And Center Wheel Prevents Unintentional Leg Movements
FREE LIFE TIME Lead Replacement, Contact us via Amazon and we will ship them to you for free. 2 Pieces Of Spare Lead Includes in The Package.
1 High Quality Professional Compass/Divider For Math, Geometry, Art, Drafting And Drawing, Creates Circles Up To 9 Inches In Diameter
All Metal, Nickel Plating Compass, Lifelong Satisfaction Guaranteed
Packaged In A Clear, Reusable Pouch. Easy To Carry And Store
$234
I read every review before purchasing it. I bought it just for my bullet journal; I'm not using it for math. It works reasonably well; some dots are challenging to make the circle function, but for the most part, you can make the majority of it work with persistence and expertise. I examine the cost and decide that it delivers just enough for me to find it to be worthwhile. When I only needed it for my bullet journal, I wasn't going to spend $20.00 or more on the better ones; I can get by with this. In order to decide whether you can get by or if you need a more expensive one in order to acquire quality for school, job, etc., you must think about what you plan to use it for. This was exactly what I needed and desired for myself.
No, the word "compass" does not have a plural form.
A compass is a magnetized needle that is free to pivot on a central point. The Earth's magnetic field causes the needle to line up in a north-south direction.
A compass is a simple magnetic device that helps people find direction. The four main points on a compass are north, south, east, and west. The needle inside the compass always points north, no matter where the compass is located. This is because Earth's magnetic North Pole is located near the geographic North Pole. The needle aligns itself with the Earth's magnetic field.
A decent compass can cost anywhere from $15 to $100. The most important thing to look for in a compass is accuracy. You also want to make sure that the compass is durable and can withstand being dropped or stepped on.
The five types of compass are: 1. Magnetic Compass 2. Solar Compass 3. Gyro Compass 4. Radio Compass 5. Electronic Compass
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