I was turning a vase last weekend carefully checking the wall thickness
with my calipers when I discovered that the calipers were bent throwing
of the measurement by maybe 1/4 of an inch.

I need a caliper that can measure inside a vase with an opening not much
more than an inch wide with a width of the inside about 6 inches. I
looked at what the local rocklers and woodcraft had and did not like
their design (I did not particularly like my sorby calipers but they
were cheap).

Are there any other options out there?