I have six 10 year old recording hygrothermographs - the kind with hair bundles and a wind-up clock mechanism - forgot to bring the brandname home. Although I've recalibrated them using a datalogger running in "real-time," I'm looking for a company that will do it properly, replacing the hair bundles if necessary. My predecessor sent one or two to California at great cost; I'm hoping for someplace on the east coast of USA. The guilt of not using them is getting overwhelming, but in their present state it would be a waste of time. Thanks. Will Garrison Collections Manager Historic Deerfield, Inc. Massachusetts