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From: Sylvia Else on 5 Aug 2010 06:16 On 5/08/2010 8:03 PM, Fast Freddy wrote: > Sylvia Else wrote: >> On 4/08/2010 11:31 PM, Noddy wrote: >>> "Sylvia Else"<sylvia(a)not.here.invalid> wrote in message >>> news:8bt5i4FtuuU1(a)mid.individual.net... >>> >>>> http://members.optusnet.com.au/sylviae/T_vernier%20001.jpg >>> >>> It's cheap Chinese dual scale. >> >> It was certainly cheap, and I'm not unduely concerned that it's not >> giving me 0.1 mm accuracy, but I couldn't believe, 'til now, that >> anyone could manufacture something purporting to be a vernier scale >> when it isn't one. >> >> Sylvia. > > why would you bother? you can buy a digital vernier for $20 to $30 that > would be far more accurate than this, having gone from this type to dial > verniers to digitals, they just sit in the drawer now that I only use > the digital version. > Well, one reason is that the digital ones require batteries that they use up even when turned off. Indeed, it appears the cheap Chinese ones may do this in less than a year. So if one wants something that's moderately accurate, for occasional use, the digital ones are not necessarily the best option. But I didn't actually set out to buy this. It was a cheap, and I thought I'd have a use for it some time. Sylvia.
From: who where on 5 Aug 2010 07:38 On Thu, 05 Aug 2010 20:16:24 +1000, Sylvia Else <sylvia(a)not.here.invalid> wrote: >But I didn't actually set out to buy this. It was a cheap, and I thought >I'd have a use for it some time. only if you need a small G-clamp (assuming it does have a slide lock)
From: who where on 5 Aug 2010 07:39 On Thu, 05 Aug 2010 20:03:55 +1000, Fast Freddy <fredff(a)zynuts.org> wrote: >Sylvia Else wrote: >> On 4/08/2010 11:31 PM, Noddy wrote: >>> "Sylvia Else"<sylvia(a)not.here.invalid> wrote in message >>> news:8bt5i4FtuuU1(a)mid.individual.net... >>> >>>> http://members.optusnet.com.au/sylviae/T_vernier%20001.jpg >>> >>> It's cheap Chinese dual scale. >> >> It was certainly cheap, and I'm not unduely concerned that it's not >> giving me 0.1 mm accuracy, but I couldn't believe, 'til now, that anyone >> could manufacture something purporting to be a vernier scale when it >> isn't one. >> >> Sylvia. > >why would you bother? you can buy a digital vernier for $20 to $30 that >would be far more accurate than this, having gone from this type to dial >verniers to digitals, they just sit in the drawer now that I only use >the digital version. You probably don't use your slide rule any more then ...
From: George W Frost on 5 Aug 2010 08:39 "Sylvia Else" <sylvia(a)not.here.invalid> wrote in message news:8bvhbqF80jU1(a)mid.individual.net... > On 5/08/2010 8:03 PM, Fast Freddy wrote: >> Sylvia Else wrote: >>> On 4/08/2010 11:31 PM, Noddy wrote: >>>> "Sylvia Else"<sylvia(a)not.here.invalid> wrote in message >>>> news:8bt5i4FtuuU1(a)mid.individual.net... >>>> >>>>> http://members.optusnet.com.au/sylviae/T_vernier%20001.jpg >>>> >>>> It's cheap Chinese dual scale. >>> >>> It was certainly cheap, and I'm not unduely concerned that it's not >>> giving me 0.1 mm accuracy, but I couldn't believe, 'til now, that >>> anyone could manufacture something purporting to be a vernier scale >>> when it isn't one. >>> >>> Sylvia. >> >> why would you bother? you can buy a digital vernier for $20 to $30 that >> would be far more accurate than this, having gone from this type to dial >> verniers to digitals, they just sit in the drawer now that I only use >> the digital version. >> > > Well, one reason is that the digital ones require batteries that they use > up even when turned off. Indeed, it appears the cheap Chinese ones may do > this in less than a year. So if one wants something that's moderately > accurate, for occasional use, the digital ones are not necessarily the > best option. > > But I didn't actually set out to buy this. It was a cheap, and I thought > I'd have a use for it some time. > > Sylvia. I have three of the cheaper verniers, plus one dial vernier and one digital vernier I prefer the digital vernier but as you say, the batteries could be a hassle, so I use the dial vernier
From: Fast Freddy on 6 Aug 2010 02:27
Sylvia Else wrote: > On 5/08/2010 8:03 PM, Fast Freddy wrote: > > Well, one reason is that the digital ones require batteries that they > use up even when turned off. Indeed, it appears the cheap Chinese ones > may do this in less than a year. So if one wants something that's > moderately accurate, for occasional use, the digital ones are not > necessarily the best option. > > But I didn't actually set out to buy this. It was a cheap, and I thought > I'd have a use for it some time. > I used to use one of these all the time, then I got a dial vernier, the only downside to that was that swarf and filings would on occasions get on the rack and make the pinion jump and would need to be reset, really a pain around the lathes, the digitals are so easy to use, easy to wipe clean, displays in metric and inch thous, one I have even show fractions of an inch, good for when you pick up a drill where the markings have worn off. the new ones not only turn themselves off after a time, but they will turn on as soon as you move the vernier. the batteries last about 12 months or so regardless if the display is on or not since the lcd displays pull so little power, if you are that worried about it, just pull the battery out when you are not using the vernier, usually the box the vernier comes in has a cut out in the foam to place the battery out of harms way. personally I cannot be bothered to use the old slide scale vernier even though it is a well made one. |