-------- Original Message --------
Subject: Re: map scale question...ps
Date: Thu, 17 Dec 2009 11:11:45 -0500
From: Joel Kovarsky <[log in to unmask]>
To: Maps, Air Photo & GIS Forum <[log in to unmask]>
References: <[log in to unmask]>
Thanks to everyone who has commented. "Perches" were highly variable, it
would be hard to know what the surveyor used (although it can also be
synonymous with poles). Poles (16.5 feet in this country by that time,
as already noted; more variable earlier in Europe) is certainly
possible, but it might not fit the area surveyed. I'm going to take a
closer look at the item, and see if there were some way to determine the
distance. My initial reaction was that paces made more sense, with a
scale of about 1:7200, but that may be wrong.
I did find an early 20th century description (1910) of the 66 foot-long
(4 pole) Gunter's chain:
http://www.surveyhistory.org/surveyor%27s_chain.htm.
Joel Kovarsky
On 12/17/2009 10:51 AM, Angie Cope wrote:
> -------- Original Message --------
> Subject: Re: map scale question...ps
> Date: Thu, 17 Dec 2009 10:14:10 -0500
> From: Paige Andrew <[log in to unmask]>
> To: Maps, Air Photo & GIS Forum <[log in to unmask]>,
> [log in to unmask]
> References: <[log in to unmask]>
>
>
>
> Could it be "perches"???
>
> Paige
>
> At 09:54 AM 12/17/2009, Angie Cope wrote:
>> -------- Original Message --------
>> Subject: Re: map scale question...ps
>> Date: Thu, 17 Dec 2009 09:50:33 -0500
>> From: Edward James Redmond <[log in to unmask]>
>> To: Air Photo & GIS Forum Maps <[log in to unmask]>
>> References: <[log in to unmask]>
>>
>>
>>
>> I have seen instances of "ps" refering to "poles" (16 feet) on 18th
>> century land surveys - not 20th.
>>
>> Ed
>>
>>
>>
>>>>> Angie Cope <[log in to unmask]> Thursday, December 17, 2009 9:39 AM >>>
>> -------- Original Message --------
>> Subject: map scale question...ps
>> Date: Thu, 17 Dec 2009 07:39:24 -0500
>> From: Joel Kovarsky <[log in to unmask]>
>> To: Maps, Air Photo & Geospatial Systems Forum
>> <[log in to unmask]>
>>
>>
>>
>> I recently saw an early 20th century land survey blueprint with a scale
>> listed as 1 inch = 200 ps. I am unclear about the "ps," since it could
>> be "photo scale," yet no conversion details were given. I was wondering
>> about "paces," but could not find another example. Various attempts at
>> disambiguation online have not yet yielded any other results. Thanks for
>> any information you can provide.
>>
>> Joel Kovarsky
>
>
>
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--
Joel Kovarsky
The Prime Meridian
1839 Clay Dr., Crozet, VA 22932 USA
Phone: 434-823-5696
Email: [log in to unmask]
Website: http://www.theprimemeridian.com
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