DEMONSTRATION METER 1788
A demonstration meter that can be converted into an AC or DC Voltmeter or Ammeters
with selection of ranges for each mode of operation by using interchangeable
dials which fit through a slot in the side of the case. The movement is housed
in a robust hardwood case. All working parts are clearly visible through front
and rear glass panels. A zero adjustment device permits instrument to be used
for centre zero working. Accuracy +2.5 FSD. Dimensions: 320x140x305mm. Supplied
without dials.
SCALES INTERCHANGABLE FOR DEMONSTRATION METER 1789
A plastic panel 313x117mm with sealed moulded box at one end which contains
shunt or voltage multiplier appropriate to the scale. AC or DC current
(a) 0-l 0 ma, (b) 0-50ma, (c) 0-100ma, (d) 0-500ma, (e) 0-1a, (F) 0-5a
SCALES INTERCHANGABLE FOR DEMONSTRATION METER 1790
A plastic panel 313x117mm with sealed moulded box at one end which contains
shunt or voltage multiplier appropriate to the scale. AC or DC Volts
(a) 0-5v, (b) 0-10v, (c) 0-15v Note: Other ranges also available.
CHARGE AND DISCHARGE KEY 1795
Used in charging and discharging of a capacitor. C.P brass strips and pillars
Three terminals fitted on a thick bakelite plate of high insulation. Contact
Resistance: 2 milli ohms approx. Maximum current: 5 Amps., Dimensions: 185x15x45mm
NICHROME WIRE, BARE 1792
A nickel - chromium - iron alloy specially suitable for high temperature applications
such as heating elements, rheostat, etc.125gms. each reel of following SWG
(a) 18, (b) 20, (c) 22, (d) 24, (e) 26, (f) 28, (g) 30, (h) 32, (i) 34, (j)
36
NICHROME WIRE (SUPER ENAMELED) 1794
Standard grade Ni/Cr wire enameled for bearing higher temperatures. In plastic
spools. Available in all common gauges i.e. in 50/100 gm spools, SWG 20,
22, 24, 26, 28, 30, 32.
COPPER WIRE, BARE 1798
Copper wire of 125 gms each reel of the following:
SWG (a) 18 SWG, (b) 20 SWG, (c) 22 SWG, (d) 24 SWG, (e) 26 SWG
COPPER WIRE DCC 1801
Double cotton covered, available in 50/100/200gms spools, in: 22, 24, 26,
28 SWG
LAMP UNIT, TRIPLE 1805
Three lamp holders are connected in parallel. Supplied complete with three
lamps 1.25V 0.25A, M.E.S. Dimensions of laminated wooden base 155x105 mm.
SWITCH UNIT 1808
A double-pole double-throw knife switch for connecting the motor/generator.
The socket terminals are labeled battery, motor and lamp respectively. Dimensions
of laminated wooden base 155 x 105 mm.
RESISTANCE THERMOMETER, PLATINUM 1812
Comprises a fine platinum foil wound on a frame, together with two compensating
leads, all enclosed in a test tube. All four leads are connected to 4mm sockets
which are mounted on a small panel at the top of the tube, 150 x 25mm.
RESISTANCE SUBSTITUTION BOX 1813
Range 100 ohms to 10 M given by 16 preferred value carbon resistors 100, 200, 470 ohms, 1, 2.2, 4.7, 10, 22, 47, 100, 220, 470 k ohms, 1, 2.2, 4.7, & 10 M ohms. Rating 0.5 W continuous, 1W max. In wooden case 90 x 90 x 40 mm with rotary selector-switch having on/off position & a pair of 4 mm sockets & 19 mm spacing on the top panel.
CAPACITANCE RESISTANCE BOX 1814
With 12 non-polarized preferred value capacitors mounted on a small baseboard with terminals for connecting in a circuit. With rotary switch and a pair of 4 mm socket terminals. Range from 100 pF to 0.47 μF. Tolerance 2%. Values are 100 pF, 220 pF, 470 pF, 1nF, 2.2 nF, 4.7 nF, 10 nF, 22 nF, 47 nF, 0.1 μF, 0.22 μF and 0.47 μF.
DC REGULATED POWER 1815
Solid state, high voltage With Square meters, Tight regulated
(a) 0-300V DC at 50mA, bias 30V at 50ma, LT 6.3V 2amp AC with 2 meters
(b) As above with 3 meters
(c) 0-300V DC at 100ma, bias 30V at 50ma, LT 6.3V 2amp AC with 2 meters
(d) As above with 3 meters
(e) 0-300V DC at 200ma, bias 50V at 100ma, LT 6.3V 3 amp AC with 3 meters
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