BRAND | Ludlum |
MODEL | Model 19 |
PRODUCT DESCRIPTION
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Rotary knob selector: 0-25, 0-50, 0-250, 0-500, 0-5000 r/hr, instrument off
Response: toggle switch for fast (4 seconds) or slow (22 seconds) from 10% to 90% of final reading
Audio: built-in unimorph speaker with on/off switch (greater than 60 db at 0.6 meters [2 ft])
High voltage: pushbutton to display hv setting on meter
Battery: pushbutton checks battery voltage
Reset: pushbutton to zero meter
Lamp: pushbutton to activate meter light
Calibration controls: accessible from front of instrument (protective cover provided)