File:Engineering Research Associates plaque.png

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Summary

Description	English: Physically located at the building that housed the original ERA offices in St. Paul, Minnesota (1902 Minnehaha), this plaque was unveiled on Thursday, June 15th, 2023, in a ceremony sponsored by the Ramsey County HIstorical Association. I (Charles Betz) was there personally and took this picture for non-commercial purposes.
Date	15 June 2023
Source	Own work
Author	Charles T. Betz

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	Date/Time	Thumbnail	Dimensions	User	Comment
current	23:18, 15 June 2023		1,961 × 1,957 (6.92 MB)	Charles T. Betz	Uploaded while editing "Engineering Research Associates" on en.wikipedia.org

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Engineering Research Associates

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ISO speed rating	32
Latitude	44° 57′ 45.06″ N
Longitude	93° 10′ 48.17″ W
Exposure time	1/1,330 sec (0.00075187969924812)
Lens focal length	4.25 mm
F-number	f/1.8
Altitude	280.658 meters above sea level
Camera manufacturer	Apple
Camera model	iPhone 11 Pro Max
Date and time of data generation	17:07, 15 June 2023
White balance	Auto white balance
Exposure mode	Auto exposure
Image height	3,024 px
Color space	Uncalibrated
Direction of image	106.81187435278
Reference for bearing of destination	True direction
APEX aperture	1.6959938128384
Meaning of each component	Y Cb Cr
Reference for direction of image	True direction
APEX brightness	8.7704631517623
Bearing of destination	106.81187435278
Subject area	2,009 1,509 2,318 1,390
Shutter speed	10.376979723595
Scene capture type	Standard
Exposure Program	Normal program
Speed of GPS receiver	0
Sensing method	One-chip color area sensor
Metering mode	Pattern
Scene type	A directly photographed image
Flash	Flash did not fire, compulsory flash suppression
Speed unit	Kilometers per hour
Exposure bias	0
Image width	4,032 px
Exif version	2.32
File change date and time	17:07, 15 June 2023
Date and time of digitizing	17:07, 15 June 2023
Software used	16.1
Horizontal resolution	28.35 dpi
Vertical resolution	28.35 dpi

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File:Engineering Research Associates plaque.png

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15 June 2023

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