The Thermohygrograph has cast brass side frames and base, mechanism machined and fabricated from high quality brass, polished and lacquered.

Recording Section 

  • Battery operated quartz clock with simple mechanism for changing rotation    from daily to weekly.
  • Daily or weekly rotation selected by change gear provided.
  • Recording is effected by easily changed fibre tipped pen.
Product Code: EN44-214 / EN44-216 / EN44-218 / EN44-220 / EN44-222