The sensor and control devices of a d.s.c.-7 Perkin Elmer differential scanning calorimeter have been incorporated into a system for measurement of enthalpies of sublimation. The system was tested with four sublimation reference substances: naphthalene, iodine, benzoic acid and ferrocene between the temperatures 298.15 K and 333.15 K and at constant pressure giving the following results: [GRAPHICS] The precision was greater than 1.9 per cent except for iodine for which some experimental difficulties increased the uncertainty. This system will find future application in the determination of the enthalpy of sublimation of the organic compounds that are being studied in the laboratory.