a new way to calculate knife jig set up

[RickKrung]

May seem like a silly question, but how do you know which measurement is accurate?  (What's the saying... a man with two watches never knows the exact time). 

I'm taking your question as "tongue in cheek", but will answer it seriously (of which I assume you already know).  By definition, a precision measuring device such as calipers should be more accurate than a graduated ruler.  But, there are "standards" available for checking and calibrating said precision devices.  Those pictured are for micrometers, but work for calipers.  There are 1-2-3 blocks and I have a full set of gauge pins from 0.0610" to 0.5000" (and the digits are significant).   

Said another way, not all watches are the same.

Rick

[cbwx34]

Thanks.  It was a bit "tongue in cheek", but at the same time, I sometimes wonder about the quality of some of the calipers I've seen.

I got a better answer than I anticipated.  Good stuff.

[Elden]

(What's the saying... a man with two watches never knows the exact time)
   Supposedly if he checks Coordinated Universal Time. 

[RickKrung]

Superglue has held for me... so far anyway, if you change your mind.

I'm trying the superglue route.

Rick

[Herman Trivilino]

(What's the saying... a man with two watches never knows the exact time)
   Supposedly if he checks Coordinated Universal Time. 

Then the watch will be accurate, but if it's a cheap watch it will drift and no longer be accurate. It lacks precision.

On the other hand an expensive watch may not drift much at all, so it's more precise. But if it's never compared to the standard clock it may not be accurate.

[cbwx34]

Superglue has held for me... so far anyway, if you change your mind.

I'm trying the superglue route.

Rick

Your picture gave me a chuckle (I often read posts under the "Recent Posts" section and it doesn't show pictures, so didn't see it until now).  I just squirted some SuperGlue on the plate and stuck it to the machine.   

(Now you know why I'm worried about drilling the holes for the USB mod).....