Chatillon's TD5-5000 is a dynamometer which also can be used as a mechanical crane scale.  It weighs up to 5000 pounds and increments in 50 pound intervals.   TD5 dynamometers are capable of sustaining up to 20% of its maximum capacity without becoming damaged.

CHATILLON® TD5 Series mechanical dynamometer may be used as a weighing tensiometer or crane scale.  This precision weighing instrument features an easy-to-read 5-inch (127 mm) dial face with shatter-resistant dial cover in a strong aluminum housing.  Available with pound dial face, the TD5 Series accuracy is better than 1% of full scale.  A manually engaged clutch “freezes” the pointer at its maximum reading for exact reading of peak weight.  Needle bearings in shackles prevent brinneling under heavy loads and eliminate shackle misalignment.  Mechanism sealed against dust and dirt.  Oiling not required.  Dynamometer is supplied with a Certificate of Calibration with Data traceable to NIST.