Proving Ring Scale , Heavy Weighing Scale , Crane Scale , FREE SHIPPING!!

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Only 1 available

In stock
Preparation takes 1-2 business days
Arrives from the United States


Item details

Proving rings are used for load measurements and are used in outfits of a number of Soil / Cement & Bitumen Testing Equipments like Direct Shear Test Apparatus, Triaxil Shear Test Apparatus, C.B.R. Test, Uncontined Test, Marshall Test etc.
They are made out of special steel carefully forged to give maximum strength and machined to give highest sensitivity combined with stability to ensure long life and accuracy. When compress or tensile load is applied within the elastic range, the proving rings get temporarily deformed. This deformation is measured by a sensitive dial gauge fixed co-axially at the center of proving ring. The dial gauge readings thus obtained versus load applied enable the operator to find out unknown load, just by noting the dial gauge reading for unknown load. The proving rings have high elasticity and on removing load they regain their original shape provided they are loaded in their elastic limits.

This proving ring is a 7-3/4 in in diameter steel ring with a 4 inch Ames dial that the needle moves easily. This is designed to weigh extremely heavy items such as crane loads and airplanes.
Needs to be calibrated, charted and .01 of dial movement would be 10 or 100 pounds.
Bronze shackled ends to accept a hook. I believe this to be from the 1940's.....very rare!!


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Shipping & policies
Preparation takes 1-2 business days
Arrives from the United States
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We provide tracking numbers on all purchases. We ship most items USPS. Ground unless priority is stated in the listing or it just makes more sense. Shipping prices are for the continental U.S only, all other destinations please convo before you buy. All prices for shipping include packaging as well. We do not intend to make money on shipping. We refund any shipping overages over $2.00 . We usually ship with insurance on items over $100.00 .

I am always happy to combine shipping when practical. Please contact me with the items you would like to purchase and I will send you a custom shipping quote, or I'll refund the difference if you have already made a purchase.

Please contact us for shipping charges outside the United States. We are not responsible for customs, duty charges ect.

If you would like special shipping or packaging please convo us before you buy.
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Returns & exchanges

If you are not satisfied with your purchase please notify us within 3 days of item receipt. Upon return of the item in original condition we will refund your purchase.via your original payment method. We are not responsible for shipping costs to return an item.