Construction Tools

There is no difference in that either can be used for the other job. Of course there are hundreds of types of guns around in the building industry.

A pair of pliers with large gripping jaws of semi circular shape. They often have a channel lock joint .

A type of locking wrench made by Vise Grip.

Google the name and number on the internet. Most Craftsman tools have manuals online.

Just guessing by that name, I would say some obscure factory in China. It may be cheap and look nice, -but will it still work in a year from now.

Yes Because Of Bacteria...And Tearing

This is a tool for fitting various drill bits into for drilling holes fast and efficiently. Some drills have a keyed chuck and some have a 'hand-grip' chuck. The keyed chuck is better when drilling hard materials or reverse drilling.

the breakout set or dummy roughneck side

diviner

On the fan pulley...

A thread tapping tool (some uneducated people may call it a 'tap'). This is a'T' handle tool that comes in 4 sizes and the lower leg of the T has a gripper to hold thread tools a bit like drill bits. These are extremely hard steel and are very precisely made and come in a huge array of sizes to suit all bolts.

Channel lock pliers are very versatile. My main use of them is for holding large and awkwardly sized objects, for instance, clearance trap nuts under sinks.

Tools like a hammer.

Friction. When the drill bit is doing its job, cutting the material causes heat and so does the contact of the flue against the walls of the hole.

You can find it on the internet if you give full information -for instance, the manufacturers name which you don't see fit to tell us . I would guess by the numbers that's a Craftsman product, but internet sites will want a lot more info than you give here ! ( more info ALWAYS gets a better answer)

Yes, the sockets are different in all battery chargers so you can only insert the correct battery.

Any HSS drill bit will make a hole in a nickel. Be careful how you hold the nickel as the bit will very likely jam into it. I use 'vice-grips' when doing something like that, pliers are not strong enough.

A crescent wrench is very handy to have when you are working in a confined space or other places you cannot haul a whole toolbox into. -I have 4 different and use them for things I've never worked on before, with unknown bolt sizes. They are very handy, but not to be used on 'torqued' bolt heads in case you 'round' the edges of the bolt (unfortunately a very common error for amateurs)

I guess it depends what you are putting in it. If you are using it for a bolt you would use 13/16. Otherwise I guess you would use a 3/4 inch bit.

This is used to hold small pieces and to twist wires, as in electrical wires when joining two wires that need three equal twists.

The hole, which is six sided, is actually in the head of the Allen screw or bolt, NOT in the wrench. The Allen wrench is a six sided tool steel bar made to very precise measurements and often, but not always, bent at a right angle at one end. Professional Allen wrenches almost always have a large 'T' handle to use as a grip, and are about 7-9 inches long, as opposed to the smaller ones you find in hardware stores. The Allen wrench principle is to allow more torque on the screw or bolt. Many mechanics even have an entire set of Allen bits to fit on their torque wrench.

Variations on the well known Allen head, (which has been around since 1912) are the modern Torx screw and the Bristol screw (much used in British aircraft industry) - All of these have a similar shape and a common principle of allowing more torque to be applied, and avoiding what is called 'cam out'.

Technically it's possible, but it needs a lot of knowledge of concrete, and of where exactly the support for the floor is. We are not talking about a small hole, for an average circular staircase, the hole would have to be at least 6 feet diameter. The concrete is likely to be 'stressed', in other words containing steel cables which would make cutting it very difficult. That's a big chunk out of a floor. It may even need to be supported on the edge of this hole in at least 2-3 places.

You can drill very accurate sized holes,

you can drill very large holes with the use of hole saws,

you can drill many identically placed holes, with use of jigs

you can drill holes in many sheets of thin materials if clamped together,

you can drill large holes in very thin materials with use of a fly cutter,

you can drill holes to a precise depth with Forstner bits.

you can mill things flat with milling bits

and many more things - a drill press is a very versatile machine

Varies according to instrument. There are differing scales and degrees of precision. Look up any catalog on surveying instruments and you will get some information, maybe more than you need, but you will get an idea. There are all different types, some heavily electronic