BAIRD &TATLOCK (LOM)ON) LTD. 



.U 



PRESSURE AND VACUUM INDICATORS AND RECORDERS. 



4864 



4865 



The illustrations show three forms of Simmance & Abady's Patent Dead Beat Gauges for recording pressure 

 and vacuum of any range and for any purpose. 



Fig. 4863 shows the instrument with circular chart in cast-iron case but with cover removed, and it will 

 be seen that the gauges require no liquid or mercury, but are connected directly to the source of pressure. 



Fig. 4864 shows the instrument with circular chart in wooden case so as to be readily portable. 

 Fig 4865 shows the instrument but with a tape chart which lasts for 60 days. 



The recorders are made in about 1,000 ranges calibrated for inches water, feet head, inches mercury, pounds 

 per square inch, atmospheres, ounces per square inch, millimetres water, centimetres water, millimetres mercury, 

 centimetres mercury and KG per q.c.m. 



Please state whether vacuum or pressure is required, or combination of both, together 

 with the maximum required to be recorded. 



4863 T Pressure Recorder with disc chart, in cast-iron case with glazed door and 100 charts . . 610 

 4864 T Pressure Recorder, portable pattern, in wooden case with 100 charts . . . . 70 



4865 T Pressure Recorder with tape chart for 60 days, with two rolls of charts . . . . 10 0| 



CROSS STREET HATTOTST GARDETST, E- C 



886 



