Cal-LIGHT 4ooL Calibrated Precision Lightmeters - Quantity 3, The Cooke Corporation (CAT#: STEM-LAPO-0006-YJL)

Cal-LIGHT 4ooL Calibrated Precision Lightmeters - Quantity 3, model 6-CC375-34-1, is manufactured by The Cooke Corporation.
The Cooke cal-LIGHT 400 Digital Light Meter is ergonomically designed for easy operation. When held at arm's length in a comfortable reading position, the angled silicon light sensor is automatically positioned horizontally and allows simultaneous measurement and readout without interference from the operator. The silicon photodiode with photopic and cosine correction assures precise illuminance measurements from the lightsource or towards the object or area being illuminated.
The Cooke cal-LIGHT 400L Low Level Digital Light Meter is a standard lightmeter with an illuminated LCD display for applications requiring measurements under 3 lux. The silicon photodiode with photopic and cosine correction assures precise illuminance measurements.
The forward position of the Cooke cal-LIGHT 400F light sensor which was designed specifically for use in museums and art galleries, allows the user to accurately measure the direct light falling down onto a painting or any other works of art. The silicon photodiode with photopic and cosine correction assures precise illuminance measurements.

Condition: Used
Measuring Range: Autoranges 0.1 fc or lux to 40,000 fc or lux
Units: Choose fc or lux with user selectable switch located in battery compartment
Accuracy:
a)Intensity linearity: 2%
b)Photopic: Better than 1.0% of CIE curve
c)Cosine error: Less than ±1.0% up to an incident angle of ±85°
d) Overall accuracy ±5% of displayed value
(3) The Cooke Company cal-LIGHT 4ooL Calibrated Precision Lightmeters

Silicon photodiode sensor
Autorange
Auto power off
Large 10mm (3/8”) LCD with low battery indicator
User selectable fc or lux units
Ergonomic design
"ON” and "HOLD” button – Click to display reading. Hold to "freeze” display
Cosine correction
Photopic correction
Built-in, hands free stand
Calibration seal is affixed to every cal-LIGHT lightmeter
Includes NIST traceable calibration certificate and Carrying case

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