The LT2234C is a non-contact laser tachometer used to measure RPM for high-speed motors, engines, fans, compressors, etc.
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72-10694 - Combination Contact/Non-Contact Laser Tachometer
The PCT900 is a combination laser tachometer that can function as a contact or non-contact meter. Useful for measuring used to measure RPM and surface speed for high-speed motors, engines, fans, compressors, etc.
Easy and quickly bought my TV component and used tutorial to fix. Now have a working TV again for a tiny fraction of cost of a new TV, so very satisfied.