i have one and they work fine. the principle is pretty simple and, therefore, reliable: one end of the calipers measures the exterior diameter of a lid (or any round piece) and the other end measure -- to the same length -- the interior. so, you throw a lid and set the calipers, then throw the pot and use the other end to guage the diameter, or vice versa. i don't think they are a "wonder tool" since you can do the same thing with a stick in the studio, but they can be handy at times.
Re: lidmaster?
Jul 15, 2003
3 Replies
my "lidmaster" calipers also have a way to adjust the center pivot pin to enable shrinkage to be considered. you can use the "shrunk" pivot and measure a fired pot and get the wet lid size.
handy concept, but i've yet to use it.
steve
steve graber
I just bought one and noticed that it can help in calculating shrinkage. I haven't tried it yet.
i have seen these calipers in ceramics monthly from time to time, but also in aftosa's catalog, aardvark (my best local supplier - santa ana california usa), and laguna clay.
i acquired my tool with a batch of equipment i bought from a school that dropped their program long ago. a VERY nice way to get set up fast & cheap if you can find another school that dropped their program.
see ya
steve
steve graber
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