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If you're looking for a torque wrench for small torque values a 1/4" or 3/8" drive model is often what you're looking at; if you're only needing to measure the torque on tightening bolts then a deflecting beam torque wrench is well worth considering. We're looking at a Warren and Brown deflecting beam torque wrench today that comes in either a 1/4" drive or 3/8" drive model - model 320500 or 310510. The product page is here. The wrench comes in a plastic case:
In use the trigger mechanism is smooth and the click is easily audible above ambient room noise - depending on how noisy your workshop is, though, you may have to rely on the visual indication of it popping back out! The torque wrench is advertised as having all-steel construction and as "exceeding Australian standards".
In terms of accuracy, this torque wrench is specified well above many of the other deflecting beam types available - it claims 2% accuracy over the entire range of the torque wrench, where others state 4%.
In terms of price, the Warren and Brown is more expensive than other brands at around $250 delivered on eBay - but the cheaper brands don't offer 2% tolerance, more often 4%. One such example is the Kincrome K8032 at around $150 deliveredOne thing of note, however, is that the Kincrome is not made in Australia.
For those interested in longevity in their tools, Warren and Brown have repair kits for the signal (part number 320398) and the wedge (part number 320595).
Warren and Brown's available deflecting beam torque wrenches are as follows:
|320500||10-220 in.lbs / 1-25Nm||3/8-inch|
|320510||10-220 in.lbs / 1-25Nm||1/4"|
|321500||4-90ft.lbs. / 5-120Nm||3/8"|
|322500||10-140ft.lbs / 10-185Nm||1/2"|
|323500||20-220ft.lbs / 30-300Nm||1/2"|
|324150||80-400ft.lbs / 100-540Nm||3/4"|
|324500||50-300ft.lbs / 60-400Nm||3/4"|
|325500||100-500ft.lbs / 140-680Nm||1"|
|325510||100-500ft.lbs / 140-680Nm||3/4"|
|325750||150-750ft.lbs. / 205-1020Nm||3/4"|
|326500||200-1000ft.lbs / 260-1340Nm||1"|
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