(A)
It consists of a 6mm bore glass tube is contained in enameled and lacquered
brass case mounted on a polished wooden board with plates for fixing to
wall, open plate reflectors and ring and screws for vertical adjustment. The
silvered scale, graduated in inches and mm are read by vernier moving by rack and pinion to
1/200 in and 1/10mm and are enclosed in glass cylinder. A glass cylinder at
the lower end of the barometer is provided with an ivory point to which the
level of the mercury in the cistern is adjusted before readings are taken. A
ring support and three locking screws at base of instrument provide a means
of securing the barometer in a vertical position. Fitted with thermometer
with centigrade and Fahrenheit scale. Supplied without mercury but with
instructions for filling the barometer.
(B)
BAROMETER CASE: - For FORTINS barometer made of wood nicely
polished with three sides glass panels.
