Instruction: Output yes if the supporting document can answer the given question. Otherwise, output no.

Input:
Question: Are they square enough or not?
Document: This set of machinist's squares comes in convenient useful sizes. I purchased the set to use around my shop--specifically to help me accurately square up my woodworking machines, including my table saw, jointer/planer, band saw, ect. These squares are very well made, and are more than accurate enough for my purposes, and the price is quite reasonable. I use them all the time.
Yes they will rust so take care of them. Very handy set and accurate enough for wood working. If you are expecting Sarrett quality at this price you will be disappointed.
I sometimes have a hard time using a right angle to measure across small boards and manipulate a loose board by myself. This makes it easier. I am not a machinest, but the different small sizes allow me to make sure that a table saw is running a true enough 90&#34; degree to table for my purpose. I also have used it to realign and check my drill press and chop saw.
I cannot detect any flaws with these squares, at least not with my Last Word indicator on my Sherline mill. I routinely need to mill sheets of titanium and have to take off very thin (0.002&#34;) layers and these squares are accurate enough to allow me to leave a 0.005&#34; tab on either side of a series of seven 1&#34; wide parts spanning a 3&#34; length.
I checked the squareness with 3 digital protractor and the square was right on right on. If there is any error it will not showup in woodworking projects.
I'm not sure if these were produced square, damaged in shipping, or just never fit the bill. I find them to be far from what's advertised as a &#34;machinist square&#34;
After i cleaned them off i put a drop of water on one and it rusted as the water evaporated. They will work just fine as a square, but i paid extra for this set over the Grizzly hoping it would actually be stainless.
For what I purchased them for they appear to be great. I do not have any precision ground granite slabs to test these against. I use them for home hobby work and so far have been more than square for what I need. They are certainly bare bones as no fancy case to store them in do not have any scales marked on them. For home hobby they are great!
I don't know why I ever built RC model airplanes without these. A gem to aid in the building of airplane kits.Great quality, works perfectly. They stand up on their own allowing you to check the levelness of the plane kit parts without having to mess with an awkward triangle square.
I gave this 3 out of 5 stars because it's not stainless steel, otherwise i would give it 5 stars due to price and functionality. I would suggest the Grizzly H2993 square set instead since it's ~ $8 cheaper than this Woodstock set, which is actually from ShopFox, which is associated with Grizzly.
Answer: yes