25mm Datum Plate “Number” Inserts – Bag of 100 - Selectequip Shop
Datum Levelling Plate
Railways Archive on Twitter: "Paging anyone with heritage railway contacts in South West UK: my employer has a box of track datum plates, not to current standards, free to a good home
Datum Plates | Rail Guages ¦ RIVVAL Online
How and Why to Take Manual Sounding On a Ship?
Royalposthumus | Stamp Plate | Datum Colop Expert Line R3040 | RoyalPosthumus