细节
A 2½inch refracting telescope,
by Carl Zeiss, Jena, the white and black finished 29½in. (75cm.) long body-tube with rack and pinion focusing, trunnion
mountings and suppliers label for E. Fransioli, Montreux, (no tripod) in case 38¼in. (97cm.) long
by Carl Zeiss, Jena, the white and black finished 29½in. (75cm.) long body-tube with rack and pinion focusing, trunnion
mountings and suppliers label for E. Fransioli, Montreux, (no tripod) in case 38¼in. (97cm.) long