After reading reviews of the delicate internal mechanism, the first step was to disassemble the TriFlow and spray generously. The assembly took a little longer than I expected. There are two plastic tips holding the axle. After that everything is fine. I used to use a 4 inch wheel to measure commercial roofs and for large buildings it was very accurate but too slow. This can take many hours, especially when applying putty (rocks). The larger wheel works much faster and is fairly accurate. It doesn't seem to have the same accuracy to within an inch, but very close. Someone was on the roof with a tape measure and we checked the accuracy. Was within a few inches of about a hundred feet on a smooth surface. One aspect that needs adjusting is the wheel height. When measuring from a wall, the distance from the axis to the floor must be taken into account. Also, it helps with reading without lifting as the wheel can spin a little. Overall it performs as expected, putting aside the old four-inch wheel. TriFlow is an excellent lubricant. The reset mechanism works perfectly. I see no reason why this block shouldn't continue to work well given due care. The smaller device was more compact and could be carried in a tool bag, while this device had to be carried alone but could not be returned due to its light weight. remote measurements.
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