the spectroscope by John Browning with prism mounted above circular platform with vernier and degree scales, on tripod base with swinging collimator and telescope, 8 1/2 in (21.5cm high); and a Wommella Whimshurst machine of standard form in original case with handle, 14in (35.5cm) high (2)
the spectroscope by John Browning with prism mounted above circular platform with vernier and degree scales, on tripod base with swinging collimator and telescope, 8 1/2 in (21.5cm high); and a Wommella Whimshurst machine of standard form in original case with handle, 14in (35.5cm) high (2)
.jpg "Quelle: Christie's")
.jpg "Quelle: Christie's")
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.jpg "Quelle: Christie's")
.jpg "Quelle: Christie's")
