14 . Cambridge Scientific Instnirnent Co., Ltd. [sec. i
Motors above J horse-power, inclusive, require Self-oiling bearings and a Starting
Switch.
Horse¬
power.
Amperes
at 115
Volts.
Volts.
Revolutions
per
minute.
Diameter
of Pulley
in mm.
Price
of
Motor.
Price of
Starting
Switch.
i
2*2
115 or 230
1700
70
£13
£1. 15s. Od.
Adalite.
i
4*3
115 or 230
1500
89
£20
£1. 15s. Od.
A daunt.
i
8*7
115 or 230
1300
114
£23
£3. 0s. Od.
Addice.
Myographs.
41. Pendulum Myograph. Simple form. The glass plate is clamped
to a wooden frame which hangs on steel points, and thus forms a pendulum 100 mm.
long. As it swings the plate moves past the recording points and the tracing is
41