Black Hills Industries Inc.
Monner Exposure Meter (Pupilometer)
Click thumbnails for larger photos and a description.
Black Hills Industries Inc.
Monner Exposure Meter (Pupilometer)
Weston Electrical Instrument Corporation
Transparent Model 650 Exposure Meter
Weston Electrical Instrument Corporation
Model 617 Exposure Meter
Sliding Tri-Color Filter Holder
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Page created June 25, 2002; updated December 20, 2020
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