Telescope and scale, by Ruhmkorff, of Paris
1840-1877
Knife support, manometer, telescope and cylinder, for use with Kater invariable pendulum
Reading telescope with stand and clamp
1904
Telescope used with Faraday's magnet
1935-1946
Galvanometer scale on brass base
Groves astatic galvanometer with telescope
1877-1889
Compression apparatus with telescope
Reading telescope with stand
1904