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Type
Model No.
Maker
Country
Construction
Material
Date
Scale Length
Area of Use
Linear
Laser Calculator
Perrygraf for Sylvania General Telephone & Electronics
USA
Cardstock
c. 1970
11.9 cm x 25.3 cm
Electronics Industry
Notes:
"Used to calculate laser parameters such as power, pulse energy, pulse duration, wavelength, index of refraction etc."
Image 1
Image 2