A miniature double pole double throw slide switch suitable for panel mounting. Connections are by solder tags.

• Maximum rating: 250V a.c., 0.25A

• Dimensions of body: 15 x 8 x 7mm

• Fixing centres: 19mm

• Pack of five

This is useful for demonstrating that some metals are magnetic whilst others are not, and for general metal identification exercises.

Comprises of sixteen discs, 25mm diameter, two each of mild steel, brass, nickel, silver, bronze, aluminium and copper.

One of each pair is stamped...

A set of twelve metal strips for magnetism work. Each stamped with a key letter for identification.

Each Plotting Compass is in a metal case.

Diameter:16mm

Pack size: 10

WARNING! Not Suitable for Children under 3 years due to small parts.

This product contains magnets or magnetic components.

Magnets can cause serious or fatal injury if swallowed.

Range: 0 to 19.99A d.c. only.

Internal resistance: 0.01?.

Overload capability: 100V.

Frequency response, ±2%: 0 to 10kHz.

Display: 31/2 digit LCD with polarity and low battery indication.

Battery: Internal 9v battery PP3 or eq...

Digital Voltmeter

0 to 19.99V D.C only.

Overload capability: ±100V.

Internal resistance: 1M?.

Display: 31/2 digit LCD with polarity and low battery indication.

Battery: Internal 9v battery PP3 or equivalent (not included).

Expect...

The Materials Collection comprises of twenty magnetic and non-magnetic materials:

The set includes:

Iron, steel, aluminium, wood, polythene, brass, rubber, copper, wool, nylon, cork, lead, zinc, carbon, glass, PVC, cotton, cardboard, perspex and nickel.

Transistorised type with 100mm flying leads. Frequency 420Hz approx. Current: 17mA max. Output: 83dB at 0.2m.

Dimensions: 23 x 17 x 15mm.

A miniature push button switch with a momentary push-to-make single pole action. Connections are by solder tags, and the switch may be mounted on a panel having a 7mm diameter hole via its threaded bush and nut. Maximum rating: 250V a.c., 0.5A. Button diameter: 6mm.

Dimensions:...

A range of low voltage d.c. electric motors suitable for model making and similar applications. All have cylindrical bodies with either white metal or phosphor bronze bearings. Electrical connection is by solder tags on the rear end clips. EACH.

Voltage range: 1.5 - 3V

Torque g/cm...

A range of low voltage d.c. electric motors suitable for model making and similar applications. All have cylindrical bodies with either white metal or phosphor bronze bearings. Electrical connection is by solder tags on the rear end clips. EACH.

Voltage range: 3-6V

Torque g/com...

Kit Contains:

5000? Thermistor

1N5401 Diode

White LED (30mA Max)

100? 5W Variable resistor

1k? 0.5W resistor

470? resistor

100? 1W resistor

47? 2W resistor

22? 2W resistor

10? 2W resistor

2200uF capacitor

10F super cap...

BEK 5kOHMs NTC Thermistor

A general purpose diode, 3A maximum current

White LED with a forward voltage of 3V and max current of 30mA.

BEK 100OHM 1W Potentiometer

BEK 1K OHM 0.5W Resistor

BEK 470OHM 2W Resistor

BEK 100 OHM 1W resistor

BEK 47 OHM 2W Resistor

BEK 22 OHM 2W Resistor

BEK 10 OHM 2W Resistor

BEK 2200uF Capacitor

BEK 10F Super Capacitor

BEK Reed Switch

The Unilab BEK Ammeter is new addition to the Unilab Basic Electricity Kit. This simple, miniature, Ammeter is an ideal way

to make current measurements in electrical circuits. If the maximum current of 2A is exceeded, the Ammeter will automatically limit the current to 0.5A (Typ) and wil...

The Unilab BEK Voltmeter is new addition to the Unilab Basic Electricity Kit. This simple, miniature, Voltmeter is an ideal way to make Voltage measurements in electrical circuits.

Specification:

Resolution 10 mV

Accuracy ...

BEK Storage Tray Foam Insert fitting a Gratnells tray. Perfect for seeing which tiles are availble or missing

UNI-T's UT139B is a True RMS Auto Range Digital Multimeter with 4000 display count and 1kHz bandwidth, featuring VFC, NCV, Max/Min/Rel measurements.

The meter can measure AC/DC Voltage and Current, variable frequency voltage (V.F.C.), resistance, diode, circuit on-off, capacitance, fre...