Removing the cover reveals the stack of plastic light-pipe sheets, one for each number 0 to 9 in this module. Decimal points sheets could also be fitted.
Each sheet carries its number marked out in an array of conical pits in its surface. When a light is shone into the edge of the short side of a sheet the light is piped round the corner, as with fibre optics, and illuminates the pits and so the number is seen.
12 digits Check Handheld calculators
Battery, solar, two way power
Plastic key
Mark-up %
Extra-large display
Rubber
Certificate: RoHS, CE
Service: Customized logo, color, brand name
Package: Color box with customized logo
Size:71*120*9 mm
Packing specifications:
Inner carton: 100 pieces
Outer carton: 400 pieces
Size: 52*32*36.5 cm
Net weight : 18.40 kg
Gross weight: 23.70 kg
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