Yes, with individual part numbers per length. Having the drops as separate pieces won’t be possible under the same part number. IFS will always show the sum of the total length. You could investigate assigning a W/D/R number to each individual piece. This would allow using one part number, but different subsets of the part number. The drawback here is that it would need assigned to each 1m length for example. You wouldn’t be able to show you have qty 3 of 1m pcs and qty 2 of 3m pcs, you would have the following:
1m W/D/R 1m0001
1m W/D/R 1m0002
1m W/D/R 1m0003
3m W/D/R 3m0004
3m W/D/R 3m0005
This has an effect on both MRP and reservations as you have to pick and transact the exact piece you want to move, nothing is automatic. But it would be visible that you have 5 pcs of varying lengths, all of the same material.