Vintage Starrett 454 Height Gauge

Inflight said:
I'll give you a hint:
View attachment 99837
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Looks like if I was to put that scribe on the bottom of the mounting arm on mine, with the scribe flush to the bottom of the base, it would zero out at 2". Which would allow me to take measurements from zero, I'd just have to subtract 2" from any reading.
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OldMachinist said:
My Starrett #25 catalog printed in 1935 says that the 24" 454 measures from 1-1/2" to 24".
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Mine will go no lower than 1.689, but at least I now have some positive proof that it was never meant to measure from zero to 24. Thanks for the info
 
So now I have 2 choices, do I make it a zero to 22" gauge and subtract 2" from every reading, or do I make it a 1.689 to 24" and have it read correctly
 
Actually if I mount the scribe to the bottom of the arm, it would be more like a 2 to 24"
 
It"s the machinist equivalent of a carpenters tape measure missing the first foot. We are more precise, We will only be off 2". :rolleyes:
 
Ok, with the help of you guys, I now understand that this was never meant to measure down to zero, and it no longer has me baffled.

I set the small scale all the way down in its adjustment slot, set the gauge to 2", locked it down, and measured from the bottom of the base to the top of the arm that the scribe mounts to. It measures exactly 2", imagine that.

Now that I adjusted the small scale, it closes to 1.653"
So I just have to make a straight scribe, mount it to the top of the mounting arm (not sure exactly what it's called), and I'll have a nice 1.653" - 24" height gauge with no confusion of subtracting the 2"

Now I have to keep my eyes peeled for a nice 0-6" for everyday use, and use this one when I need to go bigger than 6" (that's what she said, lol)

Pic with the height set at 2"
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If you look at the first picture I posted, there is no way that this one will ever hit zero, nor was it ever intended to. The main scale starts at 1", and the lowest possible reading it can get without subtracting a couple inches is 1.653"
 
You can make a small one out of a cheap set of calipers. I think there is a thread on here some where some one did that.
 
So if you built a scribe with a flat bottom that was clamped to the top of the arm it would read correctly. That makes it easy!
 
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