Hathorn Davey triple expansion engine
Triple expansion engines use three expansion stages. The engines use a series of double-acting cylinders of progressively increasing diameter. These cylinders are…

The ATA 1 and ATA 2 are the first automatic telephones manufactured by Iskra. The Model ATA 1 was intended for private branch exchanges (PBX) and fitted with an earthing button used to establish calls or switch lines. The ATA 2 is without earthing button for extensions.
Production commenced in 1949.
Manufactured by Iskra, Kranj, Slovenia
Sound: rotary dial of Iskra ATA 2 automatic telephone
Sound level: 59,3 dB
Sound recordist: Boštjan Troha
Photographer: Veronika Štampfl
Video recordist: Barbara Grilc
Triple expansion engines use three expansion stages. The engines use a series of double-acting cylinders of progressively increasing diameter. These cylinders are…
Manufacturer Pöyry, 1962-64, Revision to CTMP 2004. The CPMP bales move to the pulper to be grinded to mass with water. The…
Summer services (Suviseurat in Finnish) is the annual meeting of Conservative Laestadian movement. Leastadians are part of the Finnish Lutheran Church. Summer…
Cylinder proofing press, FAG Swiss proof in use in the Museum Printing House at the Finnish Labour Museum Werstas. The maximum volume…