This precision level has a graduation of 1/2 thousandth (0.0005)
of an inch per foot, or 0.04mm per meter with 10 second accuracy.
Could be a 199Z --- The
"Z" designation on a Starrett level generally indicates a Ground Vial
vs a bent tube vial. Ground vials provide more accuracy (smoother response). However I don't know that the 199 came with
anything but a ground vial. In the context of a Starrett 199 dial indicator, a
"ground vial" refers to the type of glass vial used in the
indicator's construction. The Starrett 199 dial indicator is a precision
measuring instrument often used in machining and manufacturing to measure small
linear distances or variations with high accuracy.
The "ground vial" in
this context typically means that the glass vial used for the indicator's dial
face has been ground and polished to very precise specifications to ensure
accuracy and repeatability in the measurements. This level of precision is
essential for achieving accurate and reliable readings when using the dial
indicator.
The term "ground vial"
emphasizes the quality and precision of the glass vial used in the indicator,
which contributes to the overall accuracy of the instrument. It's a common
feature in high-quality dial indicators like those produced by Starrett.
CONDITION
Very Good+
A tad of “rusting”, which can be
cleaned
See all pictures
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