Unlike many central-pull operators, the 100 SE motor can often be mounted to the side of the door opening, making it ideal for garages with limited headroom.
| Watch | Price Then (1970) | Now (Good Condition) | Pros vs. Crawford 100 SE | |-------|------------------|----------------------|---------------------------| | | ~$80 | $200–350 | Unique dial, cushion case | | Seiko 6105-8000 | ~$75 | $800–1500 | Better lume, water resistance | | Bulova Oceanographer | ~$90 | $400–700 | More brand recognition | | Hamilton Automatic | ~$100 | $300–500 | Finer movement finishing | | Timex Automatic | ~$45 | $100–150 | Cheaper, but far rougher | crawford automatic 100 se
Precision begins with the machine’s own timekeeping. The 100 SE utilizes a high-stability crystal oscillator as its internal time base. This ensures that the machine itself is accurate to a fraction of a second per day. If the measuring instrument is not accurate, the diagnosis is meaningless. This internal stability guarantees that the deviation readings displayed on the screen are a true reflection of the watch’s performance, not a byproduct of the machine's drift. Unlike many central-pull operators, the 100 SE motor
It automatically detects the most common frequencies (18,000, 19,800, 21,600, 28,800, and 36,000 VPH), but it also allows for manual selection. This is particularly useful for obscure or older movements where the machine might struggle to "lock on" to the signal automatically. The "SE" designation often implies "Special Edition" or specific enhancements over base models, frequently including upgraded processors that handle these varying frequencies with faster locking times. The 100 SE utilizes a high-stability crystal oscillator
Typically rated for 1000 N (Newton), making it powerful enough for larger double-sized residential doors or insulated sectional doors. Safety Mechanisms:
may encounter specific issues related to its aging electronics and mechanical parts:
The aesthetic appeal of the Crawford Automatic 100 SE is secondary to its performance. A timing machine has one job: to translate the mechanical rhythm of a watch into data that a human can interpret. The 100 SE excels in this translation through a suite of technical features.