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Date Listed 10-May-17
Address Cobourg, ON K9A0H4
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For Sale By Owner

Works well, please buy.

Additional parameters of the GraLab Model 300 Electro-Mechanical Darkroom Timer

Time Range 1sec-59mins/59secs.
Maximum Wattage (Load) 600w
Maximum Resistive Load 1200w
Number of Outlets Two
Audible Options Buzzer automatically signals end of cycle
Memory None
Display Large numerals, visible in dark
Auto Reset No
Foot Switch No
Voltage 120V/60Hz (Available in 220v/50Hz)
Dimensions 7.5 x 7.5 x 2.5" (191 x 191 x 63.5 mm)
Weight Not available
Specialties Table or wall mountable

MODEL 300Operating Instructions
Automatic Enlarger Timing
1. Set ON-OFF switch to “o”.
2. Plug enlarger into outlet marked ENLARGER.
3. Set TIME-FOCUS switch to “focus”.
4. Turn ON-OFF switch to “on” and focus enlarger
Then turn to “o” again.
5. Set timer hands clockwise to desired setting. Also, set TIME-FOCUS switch to “time”.
6. Turn ON-OFF switch to “on”.
7. Result: Timer will automatically turn enlarger o after
selected time interval.

Safelight Operation
1. Plug safelight into outlet marked SAFELIGHT
2. When TIME-FOCUS switch is set to “focus” and enlarger is turned on, safelight will be turned o automatically, eliminating any extraneous light.
3. With TIME-FOCUS switch set to “time” and the enlarger if on, safelightis automatically turned o, eliminating shadows when a dodging operation is necessary.
4. When timer hands reach zero automatically turning enlarger o,
safelight will automatically turn on providing light for your next operation.
5. You may switch another appliance on after a timed inter
val by connectingit to the safelight outlet.

General photographic timing
• Two switchable outlets
− Safelight outlet
− Enlarger or Printer outlet
• Split-second accuracy
• “Seconds” hand rotates one revolution/min
• “Minutes” hand rotates one revolution/hour
• Power switch starts the timing cycle
• End of cycle buzzer
• Luminous Dial
− Glows 20-30 minutes
− “Recharge” with incandescent or fluorescent light
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