Sokkia PECO Abney Level SFS43926
Graduated 0 to ±100´ (topo), 0 to ±25 (chain corr.), 0 to ±60°,
0 to 150% on two interchangeable scale ring
Scale pointer has friction movement. 6.5"L
Flat base, a brass tube with an aluminium arc.
With case has a belt loop & snap closure.