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Average Least Dimension
Average Least Dimension (Product Code: SLE/AG/10) is an ALD device used to find the average least dimension of aggregate chippings for surface dressing design in highway laboratories. Road research units and civil engineering colleges receive the ALD box with an adjustable spacer for 2–9 mm fine aggregates, a spare spacer case and an extension set for 10–18 mm. It is made by Jain Scientific Equipments Pvt Ltd (ScienceLab), an OEM TVET lab equipment manufacturer in India, at its own factory in Ambala.
Specifications
| Parameter | Detail |
|---|---|
| Type | Average Least Dimension (ALD) device |
| Main unit | Average Least Dimension box |
| Adjustable spacer | For fine aggregates, 2–9 mm |
| Spare case | 1 x spacer set (fine aggregates) spare case |
| Spacer set extension | 10–18 mm |
| Product code | SLE/AG/10 |
| Manufacturer | Jain Scientific Equipments Pvt Ltd (ScienceLab) — OEM |
| Country of origin | India (made in Ambala, Haryana) |
What Is the Average Least Dimension Device Used For?
A representative sample of chippings is prepared and the spacer is adjusted to suit the chip size under test: the standard adjustable spacer covers fine aggregates from 2 to 9 mm, and the extension set takes the range from 10 to 18 mm. The chips are then assessed in the ALD box following the procedure of the method your laboratory uses, and the readings are averaged to give the ALD of the sample. That figure helps the designer choose binder and chip spread rates that hold the stone firmly without flooding the surface.
Road and highway departments keep the device with their other engineering lab equipment in India so that chippings from each new source can be checked before a surfacing contract begins. Keep the spacer sets in their case between tests, check that adjustments are locked before each reading, and brush dust out of the box so it does not build up in the corners.
OEM Manufacturer
The ALD device is made by Jain Scientific Equipments Private Limited, which operates as ScienceLab and is the OEM (original equipment manufacturer) of the box and its spacer sets. Production takes place at the company's own licensed factory at Saha, Ambala, Haryana, India, and highway departments, colleges, dealers and importers buy direct from there. If a spacer set is lost or damaged, ask us for a replacement; the request goes to the maker, not a trader. See the company profile for more information.
Related Civil Engineering Lab Equipment
Chip shape and size are usually studied with several tools together:
- Grid Sieves — the flakiness index from these slotted sieves is often reported alongside the ALD.
- Flakiness Sieve Set — a seven-sieve slotted set for the flakiness test on coarser fractions.
- Shape Index Caliper — measures length and thickness of individual particles for the shape factor.
- Thickness gauge — a slotted gauge for a quick check of whether chips are flaky.
- Sample Splitter — reduces a stockpile sample of chippings to a representative test portion.
Find other road and aggregate testing items in the Civil Engineering Lab Equipment category.
Frequently Asked Questions
What is supplied with the Average Least Dimension device?
The Average Least Dimension device comes with the ALD box, an adjustable spacer for fine aggregates of 2–9 mm, one spacer set (fine aggregates) spare case and a spacer set extension covering 10–18 mm.
Which chip sizes can the Average Least Dimension device assess?
The Average Least Dimension device covers fine aggregates from 2 to 9 mm with its standard adjustable spacer and chips from 10 to 18 mm with the spacer set extension, so one box serves both size ranges.
What is the average least dimension used for?
The value measured with the Average Least Dimension device is mainly used in designing surface dressings, where the typical thickness of the laid chips guides how much binder and stone to spread on the road.
Which test method does the Average Least Dimension device suit?
Please tell us the method or specification you work to, and we will confirm whether the Average Least Dimension device matches it before you order, rather than assume one standard for every laboratory.
What else do I need alongside the Average Least Dimension device?
Alongside the Average Least Dimension device you need a way to obtain a representative sample, such as a sample splitter, and suitable sieves to prepare the chip size under test. A balance may be needed depending on your procedure.
Who manufactures the Average Least Dimension device?
The Average Least Dimension device is manufactured by Jain Scientific Equipments Pvt Ltd (ScienceLab), the OEM, at its own licensed factory at Saha, Ambala, Haryana, India. Replacement spacer sets and repeat orders are handled directly by the manufacturer.
How should the spacer sets of the Average Least Dimension device be stored?
Return the spacers of the Average Least Dimension device to their case after every use and keep them dry, so that the settings stay accurate and no parts go missing between tests.
Request a Quote
To get a price, contact us through the contact page or add the ALD device to the enquiry cart with any other items you need. The quotation comes direct from the manufacturer.
Last updated: 24 September 2026
