On 2/18/2018 11:04 AM, ultred ragnusen wrote:
> wrote:
>
>>> Does anyone know how to calibrate a torque wrench at home?
>>>
>>
>> Clamp head with handle horizontal; hang bucket of water measured
>> distance from head; add water until clicks; weight bucket; do sum.
>
> On a diagram, I see how hanging a known weight a known distance from the
> head will test the torque to see if it's correct ... but ...
>
> And I can visualize how to mechanically clamp a bolt in a vise to hang the
> torque wrench on - but then - how do you calibrate the two types?
>

or just clamp the wrench's drive in the vise. Measure from
axis, add weight. This is simple arithmetic not rocket science.

--
Andrew Muzi
<www.yellowjersey.org/>
Open every day since 1 April, 1971