Measuring triangles

[RHT]

I need to measure equalateral triangle material from 0.025 to 0.5". I know that a V anvil micrometer measures the diameter but I need the triangle height. Any suggestions as to where I can get a micrometer that would do what I need?

Thanks

[txcncman]

You said equilateral. You use a 0-1" micrometer and measure from the flat on one side to the point on the other. Use your geometry and trigonometry skills to calculate the sides.

[RHT]

Thank you for the quick reply. However the material being measured is not stiff enough to withstand a micrometer's pressure when measuring the apex. I need a v shaped anvil so that the sides support the item and the measurement is taken on a flat.

[CNCRim]

what is the material you machine?

[RHT]

Bamboo p

[tmcallister74]

Comparator?

[txcncman]

Why in the world do you need to measure a triangle of bamboo with more than 0.001"-0.002" accuracy?

[RHT]

I know that it is hard to fathom but when you are making split cane bamboo rods the tip dimension for one of the splines can be as small as 0.025 and we tolerances to 0.001. 6 thou is a fulll line weight and the ptj side is very spongy so taking ameasurement on that apex is suspect.

[txcncman]

What about an indicator on a surface plate then?

[txcncman]

The final answer is to just make yourself a custom anvil to fit on a micrometer. Oh, and just do the calculation to convert the micrometer reading to the actual size.

[easymike29]

Calculate the inscribed circle of the triangle you are attempting to measure. Place a gage pin of that size in the V of the micrometer. Close the anvil on the pin. Note the reading. That is your new "zero".

Gene