(3) It shall be unlawful to use charts with the temperature in- 

 dicated in code. 



(4) Every recording thermometer shall bear the name plate of the 

 original manufacturer having the serial number assigied by the 

 manufacturer, and the manufacturer's chart number die stamped 

 thereon. 



(5) Any recording thermometer found by a cannery employee or 

 State Cannery Inspector to be faulty in its operation shall be 

 promptly adjusted or replaced by a properly functioning instrument. 



(6) Any recording thermometer requiring repair of the thermal 

 systan shall be repaired by the manufacturer or a servicing or- 

 ganization accredited by the manufacturer. 



(7) Documentary evidence of proper calibration shall accom- 

 pany any repaired recording thermcaneter when returned by the 

 manufacturer or accredited servicing organization. 



(8) A H recording thermaneters shall be so placed with re- 

 spect to light that they are conveniently readable. 



"(b) Indicating Mercury Thermometer. 



(1) The divisions shall be easily readable to 1°F. and shall 

 not exceed 20°F. per inch of graduated scale. It shall be 

 unlawful to use mercury thermometers with the temperature in- 

 dicated in code. 



(2) All mercury thermometers shall be placed in respect to 

 light so that they are conveniently readable. 



"(C) Pressure Grauge. 



(1) Every retort shall have a pressure gauge of the Bourdon 

 type in which the ojaerating maechanism is a complete unit inde- 

 pendent of the case. Every gauge shall be equipped with a com- 

 pensating hair spring. 



(2) The minimum diameter of the dial shall be 4-1/2 inches. 



334 



