Details
AN OXIDISED-BRASS TRANSIT THEODOLITE,
BY TROUGHTON & SIMMS LONDON, THE TELESCOPE WITH RACK AND PINION FOCUSING, FOUR CROSS-WIRE ADJUSTERS, EYEPIECE EXTENSION, LENS HOOD AND DUST CAP, THE AXIS INCORPORATING THE VERTICAL CIRCLE WITH SILVERED SCALE, TWIN VERNIERS AND MAGNIFIERS, TANGENT-SCREW FINE ADJUSTMENT AND CLAMP, RAISED ON TWIN A-FRAME SUPPORTS, THE HORIZONTAL PLATE WITH LEVEL AND CROSS-BUBBLE INCORPORATING TWO SWING MAGNIFIERS OVER THE SILVERED VERNIER SCALES, WITH CHAMFERED SILVERED HORIZONTAL CIRCLE WITH SPRUNG FINE-SCREW ATTACHMENT, ON FOUR-SCREW TRIPOD ATTACHMENT WITH TRIPOD STAND, IN FITTED MAHOGANY CASE -- 13¾IN. (35CM.) WIDE
SEE COLOUR ILLUSTRATION
BY TROUGHTON & SIMMS LONDON, THE TELESCOPE WITH RACK AND PINION FOCUSING, FOUR CROSS-WIRE ADJUSTERS, EYEPIECE EXTENSION, LENS HOOD AND DUST CAP, THE AXIS INCORPORATING THE VERTICAL CIRCLE WITH SILVERED SCALE, TWIN VERNIERS AND MAGNIFIERS, TANGENT-SCREW FINE ADJUSTMENT AND CLAMP, RAISED ON TWIN A-FRAME SUPPORTS, THE HORIZONTAL PLATE WITH LEVEL AND CROSS-BUBBLE INCORPORATING TWO SWING MAGNIFIERS OVER THE SILVERED VERNIER SCALES, WITH CHAMFERED SILVERED HORIZONTAL CIRCLE WITH SPRUNG FINE-SCREW ATTACHMENT, ON FOUR-SCREW TRIPOD ATTACHMENT WITH TRIPOD STAND, IN FITTED MAHOGANY CASE -- 13¾IN. (35CM.) WIDE
SEE COLOUR ILLUSTRATION