Martin-type sphygmomanometer calibrated 0 to 295 mm
Mayer & Meltzer (estab. Circa 1848, closed 1950)
C.J. Martin sphygmomanometer by Mayer & Meltzer. Consists of rubber lined canvas, leather and fabric arm band with central rubber plug and glass tube (rubber tubing is missing), blood pressure gauge mounted on wooden stand, ivory dics (possibly a knob for tubing attachment), and a black leatherette case with metal clasp for supporting pressure gauge and stand.
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scale/inscriptions ▫ gauge engraved from top, and coloured black: '(2)90/(-)/0'
scale/inscriptions ▫ handwritten around perimeter of disc: graduated scale marked 'I II III IV V'; at centre, inside numbers: 'OZs/TROY'