A T & H Doublet Brass Waterhouse Stop Lens Serial No: NA Body: G - missing pinion for focussing] Optics: G - small seperation bloom to rear element, otherwise VG Engraving to Body: T & H Doublet Manufactory, 7 City Road, Finsbury Dimensions: H:17cm front and rear element diameter 7.5cm Notes: T&H Doublet were manufacturer of spectacles, barometers, thermometers and photographic equipment