Gear wrench

Gear wrench. This is a two-headed wrench. One end is a valve wrench for turning valve handles. The other end has adjustable jaws for piping and fittings. 

Use the wrench to remove the bolt fastened the driven bevel gear... 

Check free movement of rotating shafts by hand/wrench for bigger unit and quantity of grease/suitable lubricant in the bearings and gear boxes of rotating machines. 

Another DAG design based an a knee mechanism to generate force [14] is shown in Fig. 5. Two parallel threaded rods which connect the two larger levers shown in Figure 5 are synchronously rotated with a special gear-set wrench pulling the lower ends of the levers together. 

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