Antique barograph having finely executed lacquered brass mechanism, raised on four turned pillars over a full length brass chassis with hand-etched number: “0463/3,” comprising seven pressure sensing capsule stack with calibration knob over, burnished and blued pivots, blued screws, polished recording arm, arrestor bar, ink station with original bottle and dipper. Drum with fully enclosed conventional seven-day movement having platform escapement, captive winding key, time adjustment port, sprung paper retainer with rotating securing clip, lid, securing knurled nut and serially numbered “1620” to bottom. The sun wheel with polished steel axis shaft. Thermometer with ivorene register having a scale of 20-130 degrees Fahrenheit. Frieze chart draw below. Five bevelled glass case over with walnut frame, the whole raised upon side-long slab feet.
This barograph, unsigned, is, with its walnut case, of the very highest quality.
The subject of a complete re-build, with attention having been paid to alignment, balance and pivots. Now exhibiting very good sensitivity and progression. The bespoke replacement arm with contemporary nib, the brass work remains original in all respects. The case disassembled, cleaned and reassembled. The clockwork mechanism professionally serviced.
The chart shown was recorded by this instrument as a test at an elevation of 600ft (unadjusted).
Dimensions: 14” wide x 8½” high x 9” deep
Stock No: BG0756