E R Watts & Son transit theodolite, English

1. Distributor Otto Boettcher - Adelaide2. Address 106, 108, 110 Flinders St3. Instrument No 79924. Manufacturer ERW&S (Watt and Son)5. Patent No 114036 1917

THEODOLITE Signed ER Watts & Son. London No. 11698 and James Murray & Co. Calcutta Theodolite brass of the early twentieth century Signed on the plate with three screws: ER Watts & Son. London No. 11698; a nineteenth foot signed James Murray & Co. Calcutta. Equipped with one compass. Small magnifying overlook, circular vernier and platinum for readability. Presence of two bubble levels on the body and on one foot Brass a little piqued. Good condition 33 × 16 × 16 cm Transmission: 17 x19 x 43 cm

E. R. Watts and Son, makers of theodolites and other surveying instruments, of 123 Camberwell Road, London, SE5. Telephone: Rodney 5441. Cables: "Collimator, London".1856 Company established by Edwin Watts[1].1919 Incorporated as limited company.1946 Acquired 78% of Adam Hilger and the microscope maker James Swift and Son1947 Listed Exhibitor - British Industries Fair. Manufacturers of Theodolites, Levels, Alidades, Meterological Instruments, Variometers, Compasses, Mining Dials, Current Meters, Spectrometers, Spherometers, Clinometers, Block Levels, Circular Division Testers, Autocollimators, Linear Measuring Machines, Dividing Engines, Goniometers, Line Standards, Optical Flats. (Olympia, Ground Floor, Stand No. A.1022) [2]

1948 Amalgamated with Adam Hilger as Hilger and Watts Ltd which was incorporated as a public company[3].