GraLab 300 Timer (Electro/Mechanical)

SKU: GL300 MFR: 300
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About this item

Minutes and seconds can easily be read across the room in total darkness, making the 300 ideal for film processing, especially the precise timing required by color processing. The 60-minute time range can be set in minutes for developing and seconds for enlarger control. Two hands permit quick setting by seconds, minutes or combinations of seconds and minutes.

An exclusive dual-cam mechanism provides extreme accuracy for long time intervals: +/-015% at maximum dial setting. Two separate outlet receptacles control an enlarger or printer and safelight by a combination time/focus switch. Each outlet has a 600 watts rated capacity for operating most film processing equipment. The Model 300 can be used with a relay for heavier loads.

The case is made from a blend of hybrid plastics and measures 7 1/2" x 7 1/2" x 2 1/2". It is exceptionally strong, withstands high impact, resists chemicals and moisture, and is electrically non-conductive. The case has a recessed handle in the back and keyholes for wall mounting.

Summary of Customer Reviews

Customers most agreed on the following attributes:

Key Features

  • Fluorescent lightfast fingertip control.
  • Contemporary, easy-to-read numerals on a large 6-1/2" diameter face. Numerals, dial and hands are luminous. Glows 20-30 minutes, Recharge with incandescent light
  • Precision accuracy assured by electric synchronous motor.
  • Buzzer automatically signals end of developing period, can be set for desired volume. Adjustable from 0 dB to 80 dB.
  • Sturdy polycarbonate/PET case with rubber base pads resists impact & chemicals.
  • Gray, texture, non-slip finish has contemporary look.
  • Keyholes in back make wall mounting easy.
  • Three-wire grounded cord.
  • General photographic & industrial 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

Technical Specs

Time Range 5 Seconds to 60 minutes in Seconds & Minutes
Accuracy .015% at maximum setting
Max. Lamp Load 600W
Max. Resistive Load 1200W
Max. Motor Load 1/3 HP
Number of Outlets (2) 1 for Enlarger or Printer, 1 for Safelight
Audible Options Buzzer automatically signals end of Timing period
can be set for desired volume
Memory No
Display easy-to-read numerals on a large 6 1/2" diameter face.
Numerals, dial and hands are luminous.
Auto Reset No
Foot Switch No
Voltage Input voltage 100-130 VAC, 50 or 60 Hz
Dimensions 7 1/2" x 7 1/2" x 2 1/2
Housing Material Sturdy Polycarbonate
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