994 



In the connection of the adjustment-tube of the manometer ^) witli 



. Fig. 4. 



M In the same way as pieviously the thermometer is provided with a wider 

 part h below the adjustment-tube, in order that the thermometer may be filled at 

 the ordinary pressure and that the zero-pressure may be raised to that of the 

 international thermometer (iOOO mms) by forcing up the mercury to close to the 

 adjustment-point. A mark on the adjustment-tube makes it possible to obtain the 

 desired filling at the ordinary temperature and pressure with sufficient accuracy. 



