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Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Linear
Valve Sizing and Metering
Foxboro
USA
Plastic
1962
5 cm x 15.2 cm
Industrial
Notes:
1) Used for sizing valves for liquid and gases 2) Also used metering measurement calculation 3) Uses English units 4) Slide rules case included an instruction manual and calibration cards
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