[DSM-Iowa] [Tall-Corn] rotomatic rule

Mon Aug 30 16:36:05 UTC 2021

Your Right on!

> On Aug 30, 2021, at 10:39 AM, Mick via Tall-Corn <tall-corn at nfbnet.org> wrote:
> 
> I have a couple recommendations for anyone having them made, or even if buying them from General Machine.
> 
> 1. Have the extension rods made out of 3/8" round aluminum bar stock. The aluminum round stock can be purchased in a strong enough alloy to work just as good as steel and are a lot lighter in weight.
> 
> 2. Thread the connections with 10-24 threads to use this size set screws for the connections. If I remember correctly, either the Rotamatic or the click rule  used 10-32 threads originally. It is advantageous to have them all the same size so that extension bars can be used with both measuring devices. It is easy to retap the 10-32 thread to the 10-24 size, but not the other way around.
> 
> 3. If you are serious at using either the Rotamatic, or Click rule, it is advantageous to have 2 or more 36" long extension bars. I have used them linked together for over 12 feet. You do have to handle it carefully at these very long lenghts.
> 
> A general note-
> 
> I know some places are telling the blind that Braille rules, tape measures, and talking tape measures work just fine. I do not agree in any way. These devices are good for gross inaccurate measuring and estimates, but are not nearly accurate for good measuring by the blind. The Clickrule is faster to use than the Rotamatic, but is less accurate and because of the size and shape of the measuring head, it poses difficulties with some kinds of measuring.
> 
> -----Original Message----- From: Richard via Tall-Corn
> Sent: Monday, August 30, 2021 8:11 AM
> To: tall-corn at nfbnet.org
> Cc: Richard
> Subject: Re: [Tall-Corn] rotomatic rule
> 
> 
> Hi folks,
> 
> Some good ideas generated in this thread so far.  Glad i posted the
> original.
> 
> Here's my basic plan.
> 
> A very close friend is a retired toolmaker/machinist who has a well
> equipped machine shop at his disposal.
> No, he's not interested in doing a run of units, but I'm going to borrow
> one from a local friend, let him have a closer look as he repairs the
> man's 6 inch extension's male connection, and fabricate me a set.
> 
> IN doing so he'll be able to do the drawings and create specifications in
> a form which will be presentable to any machine shop that might have an
> interest in doing this work.  HE has the equipment to fabricate one right
> there at home, and the knowledge to communicate with professionals.
> 
> Other ideas and courses of action proposed in this thread are very much
> worth pursuing as well.  Thanks folks!
> 
> Regards,
> 
> Richard Webb
> 
> 
> 
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