Figure 1. Rapid Sediment Analyzer. Settling tube and 

 pressure tube are shovm at left of photo; connecting 

 tubes supply and drain water. At right is console 

 housing digital voltmeter with timing and sampling 

 circuitry; atop console is analog strip chart record. 

 for visual recording of pressure-time decay curve. 

 In center is card punch for direct punching of 

 data as sediment falls through metering column. 



