My 2011 chevy work truck has roll up windows, manual locks, vinyl interior. It does have A/C and an automatic.
Of the part bring measured is longer than one Smoot you will be using math....2 smoots, is 1 smoot PLUS 1 smoot... and that is math... in fact measuring shit is one of the main reasons math was invented... So math has everything...literally everything, to do with it. But like 56don said, we will have to agree to disagree Chappy
I use a sewing machine to make my living by. I turn the dang thing off every time I get up to do something. Every time. I hate to hear the thing run. And I`m hard of hearing. With it off, you can still push the foot feet and sew a bit longer. So it`s not for the safety factor. It`s just a habit. Or a Quirk. My air impact, air ratchets and hand ratchets are all clicked to reverse, so when I pick them up, out comes the bolt. Sometimes a standard bolt and sometimes a metric bolt. But I keep them separate.
So...how do you know the part is 40.000mm? Because you have a scale of some sort that has a mark labeled 40.000mm? How did they make that scale exactly? Did they use a standard of some sort? What is that standard traceable back to??? A block of granite? Two marks inscribed on a bar of platinum-iridium? Or, most recently a meter is defined as the length of the path traveled by light in a vacuum during the time interval of 1/299,792,458 of a second. So even the metric system is defined by something decidedly not metric. But wait, isn't one second part of an hour? And how many hours on a clock? (Didnt I ask this question already in another post?) So you see, precision of a scale absolutely affects your measurement weather you know it or not... scales have graduation on them, and graduations that are 0.198mm apart are more precise than two graduations that are 0.200mm apart Here is a real world example: I need to determine the hardness of a sample. I use a hardness tester to make a knoop indention. I now need to measure the indention. I magnify the indention on my screen 100x. I will have to approximate where the edge of the indent is because at this magnification the edge is not clean. I have two NIST traceable scales to choose from... do I use the one with the closer graduations? Will it be easier to get a more precise estimation of the size of the indent using the narrower scale? Chappy
I see you found Google. Now we just have to figure out what this wall of words has to do with your initial claim that fractional inch marks is somehow more accurate than a scale that uses metric tick marks. For that, we may need a magic 8-ball.
Yep, I have three sons and a daughter, and they all get shop time. I try not to be as grumpy as my dad, but I can see where he was coming from. Missing tools, greasy tools... oh yeah, they hear my opinion on that! It’s great to see them doing something real instead of poking around at their damn phones, or playing video games.
I was doing a function check on an F5, prior to putting the aircraft back on the line. Part of the test is to fly inverted for a certain amount of time, to insure that there is nothing loose in the cockpit. I rolled inverted at 500 kts, pushed the stick forward to maintain altitude, and a 5/8 wrench nailed me on the Oxygen mask. I was a little pissed. After landing, I went to the person who signed off the aircraft, and he denied that it was him. We checked his tools, and everything was there. My point is, that it can be dangerous to leave tools in the equipment, and that the tool may not have been abandoned in a critical place, by the last person that worked on the aircraft. Another time, while doing an inspection, I found a crescent wrench entangled in the control wires. It was a miracle that it hadn't jammed the controls. I also had a situation where number 1 engine start controls were wired to the number 2 engine, and vice versa. It pays to double check. I have all my SAE and metric sockets on holders, but I don't organize my wrenches, other than to keep a tool box for SAE, and one for metric. When I studied engineering in Canada in the early 60s, we had to be fully conversant with both systems. It was good training, because later in my life, flying overseas, it was necessary to be able to convert pounds of fuel to litres. A small mistake could mean a big problem when you are loading 1/4 million pounds of fuel. Bob
I seldom if ever use and adjustable wrench. To me they just aren't professional and the first day I started teaching auto mechanics after working several years in shops I locked up all the adjustable wrenches and made the kids figure out what size of wrench they needed. When I was working I was pretty anal about everything being in it's spot in the tool box as I often rolled over to the tool box on a creeper and reached in the wrench drawer, grabbed a wrench by feel and rolled back under a car. I've been pretty lax the last few years though.
Google... yep. sorry I couldn't remember the percentage of a second used to define a meter off the top of my head... As for the rest? This is one of the products that my company sells and I service and train people how to use https://www.ssi.shimadzu.com/products/hardness-viscosity-flow-testing/hmv-g-series.html I also am responsible for their high speed video, NDT CT scanners, universal/tensile testing frames, and atomic spectroscopy (EDX, XRD, XRF x-ray) lines of instruments But please, let's get back to my initial statement "Given a chance, you will find estimating to +/- 1/2 a division far less error prone. So if we go base 2 fractional, then one could measure using a rule to quite a fine measurement. If measuring a clean edge and using a machinist scale, 1/128 of an inch is achievable with my 50 year old eyes. You're not getting that estimating to a decimal of a mm" And my last statement I need to determine the hardness of a sample. I use a hardness tester to make a knoop indention. I now need to measure the indention. I magnify the indention on my screen 100x. I will have to approximate where the edge of the indent is because at this magnification the edge is not clean. I have two NIST traceable scales to choose from... do I use the one with the closer graduations? Will it be easier to get a more precise estimation of the size of the indent using the narrower scale? And in between we have discussed other things but I feel those things were main topic centric. Maybe the issue is you simply didnt understand my initial statement the way I intended I will try to rephrase Using a ruler that divides graduations in half to get the next smaller graduation or one that divides those graduations into 10 parts....and then having to use those smaller graduations to estimate the size of something that the edge of falls between the two smallest graduations on your scale...having the smaller distance between the two graduations will have a higher precision when estimating where the edge of your sample falls between the graduation marks. I went on to show how 1/128 converted to 0.198mm to prove my point that a standard graduation on the scales we were talking about in my initial post is a bit tighter/precise than the metric graduation mark of 0.2mm. You can at least agree that 0.198mm is a thinner slice on a ruler than 0.2mm cant you? Chappy
Big +1 on the above: Adjustables, water pump pliers, etc all have their places - usually in storage. Handy when needed at times but far from the final answer many think they are. I worked many night shifts in shops and on the road under much less than optimum light conditions for 35 years, learned real fast how keeping tools organized and being able to grab them without looking made the jobs go so much easier. I still maintain age has absolutely nothing to do with getting lax lately............ Metric inches etc: For many jobs things fit or they don't, actual numbers don't really matter. A 4 month stint in a tool shop (production work took me from just plain drinking into D near crazy) almost 50 years ago taught me the usefulness of simple inside and outside thumb screw adjustable calipers. They remain reach for tools for a lot of my fabrication jobs today, much quicker and easier to go by feel than deal with any math conversions. When I have to do math conversions of less than 6" I grab my cheap digital vernier calipers and use the inch/metric buttons, quicker and easier for me than punching numbers and using formulas with a calculator. Ed
I have credentials too. But I've only ever addresses a single, incorrect assertion you made. In response, you have flailed around with a half dozen red herring arguments, kettle logic, and an appeal to authority. It may take more focus than you can manage to understand your own first erroneous assertion. So, time for me to put you on ignore.
I explained it very clearly in my last post that you obviously didnt fully read. But thank you for bowing out gracefully. Chappy
When I started out working if I needed to borrow something a second time it went to the top of the buy list.
I use extension cords like a rodeo cowboy. I hold the coil in my left hand and toss 'em straight out with my right. "Unrolling" is way too slow for my attention span. The trouble is, the cord is out there like a DNA double helix when the job is over and I begin to wind it back up in my left hand again. So as I pull the cord through my right, I can feel when to simply loop it or when to give it a twist/flip with my wrist. But those extra twists start stacking up down the line 'til the far end of the cord is like python porno. That's when I turn into a trick roper and I'm spinnin' 20 feet or more of cord like a 6 foot wide corkscrew out in front of me. Works every time to get the snakes out. I usually don't have an audience for the show but I'm well entertained myself. Then I hang the "rolled" coil on a wall hook so the male and female plugs are equally balanced on each side of the hook....... ready for the next rodeo.
My son bought an O/T, 2017 econobox, (a Ford, no less) that has power windows for the front windows and cranks for the back windows. The sales person told us that at different times in the 2017 production, that model had either power for all four, cranks for all four or the front/back split power/crank. Like Mother Gump said, "Cars are like a box of chocolates. You never know what you're going to get".
Shift, My dad taught me how to handle rolling up cords or hoses. The key to it is to stretch out the cord/hose and pull it to you as you coil. Twist the cord/hose as you coil it, making sure the end of the cord /hose is able to roll freely. His cords/hoses were always coiled in a neat circle. A skill I’ve used almost daily. Think of him every time I coil a cord/hose. Bones
If you reverse the twist every other loop, you can just drop the coil on the floor and pull an end. It will unroll smoothly with no tangles. Sent from my iPad using The H.A.M.B. mobile app
Right handed people ruin extension cords! And brooms! Lol Sent from my LG-TP450 using The H.A.M.B. mobile app
I agree. Company I used to work for bought material moving blowers from Belgium for years until the new management came up with the bright idea of making them in house and saving a lot of money. I'm talking about five foot diameter blowers that weighed about 700 pounds fully welded out. They ordered a set of blueprints from the Belgians and when they got to our shop, they were METRIC. Management was all upset, the rest of the guys in the shop were all upset, I called Grainger and ordered two metric tape measures and a couple of 1000 millimeter (39.37") rulers. Two days later, we were building 1524 millimeter diameter blowers ( 5 feet ) and most of the guys stopped trying to convert, they just looked at the numbers and got the job done. I get the frustration I'm reading in these posts about the two different systems. I have the same problem when I grab up a metric socket by mistake because there are both metric and inch fasteners on the same part. If we only had one system, we wouldn't have the frustration.
I went over to a friends to help him adj the valves on his 327. I asked, do I need to bring any tools. He replied, no I have what we need. When I got there ( 35 min drive) I opened his tool box and it was full of bare wire ex cords, tail light bulbs, scotch tape, close pins, hooks, striped nuts and bolts and a tube of hand cleaner. I asked where are the tools. He replied, I’ll have to look for them. I got in my truck and left. Sent from my iPhone using The H.A.M.B. mobile app
Don't that just jack your jaw! Been there a couple times myself, one was a lady friend of my wife so she got half credit but yeh!
Same here= 2017 F-350 with cranks.........A/C, vinyl, manual locks, a/t...... younger gen's are flipping out.
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