A combination instrument recording barometric pressure, temperature & humidity. Unlike other instruments recording these elements, this one has an extended clock drum allowing separate recordings. This particular example would have originally been supplied with a metal case & at some stage was installed into this most attractive mahogany case, complete with beveled edged glass & a 40mm deep chart drawer to the base. The correct charts will be supplied with this impressive instrument.
405mmH x 467mmW x 285mmD