Spirit level, manometric, for rail gradient, probably by Abtus, England c.1960. Manometric spirit level 1955-1965
Track gauge, cant, steel stem, Mark II cross level transfer gauge, No 5171, by Abtus, England, c1970. Abtus cant gauge 1970
Track gauge, cant, Mark II cross level transfer gauge, No 6793, with plastic insulated stem for third rail use, BR marking, by Abtus, England, c1970. Abtus cant gauge 1970
Brown's Railimeter in wooden case, for measuring rail wear and estimating remaining useful rail life of BS 85R and 95R bullhead rail, by Abtus Permanent Way Equipment Co, London, c.1950. Case: 57 mm x 443 mm x 382 mm; railmeter: 29 mm x 400 mm x 352 mm. Brown's Railimeter in wooden case 1945-1955
Voidmeter, Abtus Voidmeter c1960, used to measure the deflection of track when a train passes over it. The graduations on the scale represent units of ballast necessary to cure the deflection. Abtus voidmeter 1955-1965
Abtus Voidmeter, for measuring ballast voiding, mounted on steel stake, cast iron and brass, English, 1950-1965 Abtus Voidmeter 1950-1965