[AT] OT pocket knives

Dave Rotigel rotigel at me.com
Sun Jul 12 10:05:38 PDT 2015


Darn, That's NEAT! I use a tape measure in a similar way!
	Dave
PS, Kidding aside, THAT'S NEAT!

On Jul 12, 2015, at 11:02 AM, rlgoss at twc.com wrote:

> I sold both of the polar planimeters I had in our garage sale yesterday.  They were perfectly  good instruments, but technology has left them behind. That fact plus this thread brought to mind that I have carried a two-bladed pen knife for many years specifically because you can use it as a planimeter in an emergency by opening the large blade completely and opening the smaller blade to approximately 90 degrees before starting a tracing. It gives a measure of irregularly-shaped areas that is better than estimations and requires minimal instruments.  You do have to keep the blades sharp so they don't slide sideways over the map, and they need to hinge at opposite ends of the knife.
> 
> 
> Larry
> ---- jtchall at nc.rr.com wrote: 
>> Just an update: I bought my son a single blade Case with a plastic/composite 
>> handle. The knife has a lockback design. After reading your posts it seems 
>> quite a few folks are using single blade knives instead of the 2 and 3 blade 
>> knives I carry. I carried him to 3 stores and we tried several. This one is 
>> fairly easy to open and close, yet the blade is never in a "free" rotating 
>> state. Some of the easy opening ones seemed to me they could open in your 
>> pocket. The blade is about 3-3.5 inches long and the knife is big enough to 
>> get a really good grip on. The handle is also textured. The Kershaw and 
>> Gerber knives some of you suggested were out of stock actually. Anyway he 
>> seems pleased and has used it the last couple Saturdays around the farm.
>> 
>> John Hall
>> 
>> 
>> 
>> 
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