Ruler FAIL - Page 1
Forum section: electronics / general

author: xrunner
author_rank: Super Contributor
timestamp: April 26, 2013, 09:07:53 pm
content: Can anyone spot the problem with this ruler I just bought?

author: grumpydoc
author_rank: Super Contributor
timestamp: April 26, 2013, 09:13:51 pm
content: Free 10% extra with the first cm only

author: ddavidebor
author_rank: Super Contributor
timestamp: April 26, 2013, 09:16:59 pm
content: someone here need a steel scissor!

author: xrunner
author_rank: Super Contributor
timestamp: April 26, 2013, 09:17:44 pm
content: Quote from: grumpydoc on April 26, 2013, 09:13:51 pmOur rulers feature a bonus extra length for the same distance! Compare to other brands!

author: Rick Law
author_rank: Super Contributor
timestamp: April 26, 2013, 09:21:02 pm
content: Quote from: xrunner on April 26, 2013, 09:07:53 pmmm where it should be cmI think it is just the battery running low. Find the battery compartment, change the battery, and the improper label will heal.Rick

author: xrunner
author_rank: Super Contributor
timestamp: April 26, 2013, 09:31:07 pm
content: Quote from: Rick Law on April 26, 2013, 09:21:02 pmNo that's not the problem. That just means it's graduated in mm.

author: Rick Law
author_rank: Super Contributor
timestamp: April 26, 2013, 09:42:12 pm
content: Quote from: xrunner on April 26, 2013, 09:31:07 pmHmm... I would have expect them to label itcm. If you are referring to the first marker being a short-mark rather than a long-mark, I am not sure I can call that a fault. I've had many rulers that doesn't start at the edge but did exactly what is depicted as far as the first mark goes.I will have to wait for someone else with keener eyes. (In other words, I think I can't spot it.)Rick

author: xrunner
author_rank: Super Contributor
timestamp: April 26, 2013, 09:52:15 pm
content: Quote from: Rick Law on April 26, 2013, 09:42:12 pmThis type of ruler should start at the end - yes. Just like all the other ones I have that are made properly and start at the end. See the pic? All of those rulers start at the end properly.

author: Corporate666
author_rank: Unknown
timestamp: April 26, 2013, 09:52:57 pm
content: What are you complaining about? You got MORE millimeters than you paid for - you should be happy!

author: xrunner
author_rank: Super Contributor
timestamp: April 26, 2013, 09:55:07 pm
content: Quote from: Corporate666 on April 26, 2013, 09:52:57 pmYea! More metal for the money!

author: Rick Law
author_rank: Super Contributor
timestamp: April 26, 2013, 10:15:30 pm
content: Quote from: xrunner on April 26, 2013, 09:52:15 pmAh ha! I usually just borrow a ruler from my daughter. Most of the student rulers she uses start a mark or so from the left edge as your, and some doesn't make it a long-mark for the first.I would not have considered that a fault.Rick

author: Rufus
author_rank: Super Contributor
timestamp: April 26, 2013, 10:30:18 pm
content: Quote from: xrunner on April 26, 2013, 09:52:15 pmJust to confirm you are right and the rule is a huge FAIL.Every steel rule I have seen starts at one end allowing you to align it with the edge of what you are measuring with the aid of another surface such as a set square.

author: xrunner
author_rank: Super Contributor
timestamp: April 26, 2013, 10:42:43 pm
content: Quote from: Rufus on April 26, 2013, 10:30:18 pmThanks. Even if they were dumb enough to knowingly make it this way, they would have had to make the first mark (the one that is 1 mm in) a long mark which would have indicated the Zero reference. I still would take it back because it's useless to me like that, but at least it would have shown they had some low-level understanding of how to make a ruler scale.

author: MikeK
author_rank: Super Contributor
timestamp: April 27, 2013, 12:10:38 am
content: You grind it to the final dimension. Can only be calibrated once.

author: Rick Law
author_rank: Super Contributor
timestamp: April 27, 2013, 12:17:19 am
content: Quote from: xrunner on April 26, 2013, 10:42:43 pmHow interesting.Had I been the one getting the ruler, I would not have considered that a problem at all. Learn something new again.Rick

author: amyk
author_rank: Super Contributor
timestamp: April 27, 2013, 08:43:22 am
content: Quote from: xrunner on April 26, 2013, 09:31:07 pmOr he's bought a ruler with 100um gradations.

author: GeoffS
author_rank: Unknown
timestamp: April 27, 2013, 08:59:32 am
content: They've just built in that little bit extra to allow for future wear.Very considerate of them

author: SeanB
author_rank: Super Contributor
timestamp: April 27, 2013, 09:49:24 am
content: Normally with me just the markings wear off, and I just use a little black paint and a cloth to redo them. 5 minutes with the bench grinder and a glass of water and it will be perfect.I do have a set of vernier callipers though that open to over a half meter though. Not used often, though very useful when you need to measure and it is just over what the common ones can do.

author: KJDS
author_rank: Super Contributor
timestamp: April 27, 2013, 12:10:52 pm
content: You have a rule, with an error, not a ruler.The queen is a ruler

author: Strada916
author_rank: Frequent Contributor
timestamp: April 27, 2013, 01:34:54 pm
content: I think the Queen or King would be most upset if you used them to measure things. LOL Anyways I usually use my rule from 10 as there is no error then.

author: GK
author_rank: Super Contributor
timestamp: April 27, 2013, 03:39:28 pm
content: A proper machinist never uses the end of the ruler as a reference anyway. He/she always uses the 10mm mark as zero and simply adds 10mm to the measurement. The end of the ruler may be inaccurate due being banged about and wear. That's what I was taught back in technical school anyway. If Mr Packer caught you using the end of the ruler as a reference he'd smack you over the head with it.

author: Jon Chandler
author_rank: Frequent Contributor
timestamp: April 27, 2013, 04:00:35 pm
content: Quote from: GK on April 27, 2013, 03:39:28 pmMaybe after the first piece he cuts is 20mm too long, he'll remember tosubtract10 from the reading

author: ResR
author_rank: Regular Contributor
timestamp: April 27, 2013, 05:11:39 pm
content: That is interesting. Even my soviet era stainless ruler with Gost 427-75 certification starts at the end, the material is pretty hard to wear down, although it is just 0,5 mm wide.

author: Rufus
author_rank: Super Contributor
timestamp: April 27, 2013, 05:26:45 pm
content: Quote from: GK on April 27, 2013, 03:39:28 pmThe same way as a proper machinist never uses the end of callipers or a micrometer to measure anything?

author: xrunner
author_rank: Super Contributor
timestamp: April 27, 2013, 11:07:03 pm
content: Quote from: GK on April 27, 2013, 03:39:28 pmI'm not machining anything. And as I've shown in another post it's very common and practical to have rulers made to where you can make a measurement from the end - I've got at least 8 or 10 like that. I'm not scrapbooking or making paper houses for a third grade project. I'm making exacting hobbyist scale measurements that use rulers that have scales starting at the end. It would take me about 25,000 years to wear out a stainless steel ruler with a scale starting at the end to the point it wouldn't work for what I'm doing.

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: April 27, 2013, 11:14:45 pm
content: Mine is twelve inches.But I don't use it as a rule.

author: GK
author_rank: Super Contributor
timestamp: April 28, 2013, 12:12:33 am
content: Quote from: Jon Chandler on April 27, 2013, 04:00:35 pmHey? If you want to mark out 100mm and start at 10mm, you then go to 110mm.

author: GK
author_rank: Super Contributor
timestamp: April 28, 2013, 12:16:06 am
content: Quote from: xrunner on April 27, 2013, 11:07:03 pmOh lighten up! So you blew $1.50 on a Wun Hung Lo ruler. Deal with it and go buy another. Freaking hell.

author: xrunner
author_rank: Super Contributor
timestamp: April 28, 2013, 12:16:43 am
content: Quote from: GK on April 28, 2013, 12:16:06 amBite me.

author: David_AVD
author_rank: Super Contributor
timestamp: April 28, 2013, 12:16:51 am
content: Quote from: GK on April 28, 2013, 12:12:33 amI guess it depends on whether you're marking something out or measuring between two points.

author: GK
author_rank: Super Contributor
timestamp: April 28, 2013, 12:18:22 am
content: Quote from: Rufus on April 27, 2013, 05:26:45 pmYes, obviously.

author: G7PSK
author_rank: Super Contributor
timestamp: April 28, 2013, 08:33:35 am
content: Some times in real life you have to measure from the end of the ruler unless you start digging holes in floors walls or the work piece, I think Mr Packer needs to insert the ruler where the sun never rises if he hits pupils on the head with any ruler let alone a steel one.

author: SeanB
author_rank: Super Contributor
timestamp: April 28, 2013, 10:57:42 am
content: Quote from: Ed.Kloonk on April 27, 2013, 11:14:45 pmBut we are not talking about your beard though.......

author: Ed.Kloonk
author_rank: Super Contributor
timestamp: April 28, 2013, 11:24:08 am
content: Quote from: SeanB on April 28, 2013, 10:57:42 am

author: Corporate666
author_rank: Unknown
timestamp: April 29, 2013, 04:18:28 am
content: Quote from: Ed.Kloonk on April 27, 2013, 11:14:45 pmThe good news... you have 12 inches!The bad news... you were counting from the wrong end of a 16" ruler!(rule, for the pedants)

author: Corporate666
author_rank: Unknown
timestamp: April 29, 2013, 04:20:09 am
content: Quote from: GK on April 27, 2013, 03:39:28 pmI do a lot of machining and I use rulers from the end all the time.

author: xrunner
author_rank: Super Contributor
timestamp: April 29, 2013, 10:26:50 pm
content: Quote from: Corporate666 on April 29, 2013, 04:20:09 amYou don't say!As a follow-up, here's the other end of the ruler. Golly - it's exactly right! Isn't that funny?

author: GK
author_rank: Super Contributor
timestamp: April 29, 2013, 11:33:32 pm
content: Quote from: Corporate666 on April 29, 2013, 04:20:09 amIt was an anecdote from high school about a curmudgeon of a technical studies teacher. I didn’t think anyone with half a brain would have taken it seriously or insulting. I am surrounded by muppets!....tuning out now..............permanently............

author: Corporate666
author_rank: Unknown
timestamp: April 30, 2013, 12:20:33 am
content: Quote from: GK on April 29, 2013, 11:33:32 pmRelax, I meant it humorously.What, you didn't think a forum about electronics would be full of pedants?