It is not reasonable to expect that the effective diameter of tool rotating at 1 RPM on a presetter in a climate controlled tool room will be the same as when it is in a 10,000 RPM spindle with rising bearing and ambient temperatures. Tool offsets should be measured on the machine with lasers or probes in order to compensate for environmental changes. However this does not mean that offline presetter are still not very valuable. Building or reloading a tool assembly to pre-determined and consistent dimensions ensures dynamic repeatability. Also, delivering an accurate "logistically preset" tool assembly to a probe-equipped machine will allow for a quicker approach to the probe and prevent crashes.