Slotted Weight (Iron Black Painted) Manufacturer,Supplier and Exporter in India
Product Code : EL-MI-2146
Jlab Export is a leading Slotted Weight (Iron Black Painted) Manufacturer,and suppliers in India
Slotted Weight (Iron Black Painted) (code EL-MI-2146) is a set of cast-iron slotted weights with a black painted finish, intended for experiments that need a large load — above all the sonometer, where hanging weights set the tension in the wire. The weights slide onto a hanger through their slots so the load can be changed step by step. It is made by Jain Laboratory Instruments Pvt Ltd (JLab) at its works in Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Material | Cast iron |
| Finish | Black painted |
| Suited to | Sonometers and other applications where a large load is required |
| Not stated in this listing | Weight sizes and number of weights per set — confirmed in the quotation |
| Hanger | Not part of this listing; available separately |
| Quality check | Each set is visually inspected before dispatch |
| Pack quantity | One set of slotted weights |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 7–10 working days |
| Product code | EL-MI-2146 |
| Manufacturer | Jain Laboratory Instruments Pvt Ltd (JLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Are Black Painted Iron Slotted Weights Used For?
In the sonometer experiment a wire passes over a pulley and is pulled taut by a hanger loaded with weights; changing the load changes the tension and so the frequency at which the wire resonates. The class 11 physics practicals on the relation between frequency and length, and between frequency and tension, need loads well beyond what small brass weights provide, and cast iron gives that mass at modest cost. The same heavy sets serve Searle’s apparatus for Young’s modulus and any rig where a wire, spring or beam must carry a substantial load. Stack the weights with their slots staggered so the hanger stays balanced, lower them gently rather than dropping them, and keep them dry so the paint keeps rust away.
Frequently Asked Questions
Which sizes are in a set?
The listing does not give the sizes or the number of weights per set. State the loads you need for your sonometer or other apparatus and JLab will confirm the set make-up in the quotation.
How do these differ from the chrome-plated slotted weights?
These are cast iron with a black painted finish and are aimed at large loads. JLab’s other slotted weights are rust-proofed iron sets of five with chrome plating, or brass weights turned from rod and carefully adjusted.
Is a hanger supplied?
A hanger is not part of this listing. Add a slotted weight hook or hanger to your enquiry.
OEM Manufacturer
JLab is the trading name of Jain Laboratory Instruments Pvt Ltd, a physics lab instruments manufacturer in India, incorporated in 2017, with its works on Hargolal Road, Ambala, Haryana. These cast-iron weights come from JLab’s own works, not from a trader, so schools, colleges, dealers and importers order from the maker and each set is inspected visually before dispatch. JLab exports worldwide and ships to buyers in every region — for example Trinidad and Tobago in Central America and the Caribbean, Rwanda in East Africa, Ghana in West Africa, Eswatini in Southern Africa and Norway in Northern Europe.
Related Slotted Weights and Apparatus
- Sonometer — the stretched-string apparatus these weights load.
- Slotted Weight Hook — a steel rod with hook for carrying slotted weights.
- Slotted Weight Iron Rust C.P.Proof (Set of five) — chrome-plated iron sets of five equal weights.
- Slotted Weight Brass C.P — brass slotted weights turned from rod.
- Searle’s Apparatus — for Young’s modulus of a loaded wire.
More weights are listed under Measuring Instruments.
Request a Quote
Quotes come direct from the manufacturer. Use the Add To Cart enquiry button, or send the loads you need, the number of sets (minimum 10 units) and your delivery location through the contact page.
Last updated: 9 October 2026
