Friday, October 28, 2022

Owatonna Tools adjustable wrench


Thanks, Glenn!

This beauty was found while tidying up a toolbox at the Waterloo Central Railway.  

Made for large fasteners, the wrench is adjusted by pulling the pin and sliding the bottom jaw the correct distance, then reinserting the pin.  The grooves/ways for the moveable jaw are a good close fit, so the 7/16" dia. adjustment pin (bolt in this case) really just holds the jaws at the correct spacing. The size range seems to be 1 3/8" to 2 7/8" in 1/8" steps.

 The wrench was manufactured by the Owatonna Tool Company of Minn. which is still around, operating as OTC Tools, these days making automotive diagnosis and specialty tools.

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