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Electric Bell Kit

$9.95

It's a bell! It's a buzzer! It's a telegraph! The telegraph introduces the basics of electric circuitry. Use it as a telegraph--change the circuit and use it as a bell or buzzer. This is a fun to build kit and fun to use. Battery not included. Ages 8...

Electricity: EIN-O's Electric Buzzer Box Kit

$6.49

A valuable activity kit to explore the forces of electricity and magnetism. This box kit includes activities for an Electric bell or alarm. Ein-O's I Know Guide included.

'Gralab'' Precision Electric Timer - 15 Minute Range - Model 255 by Franklin Machine Products FMP -

$148.46

Gralab Precision Electric Timer 15 min range 15 sec minimum setting Continuous buzzer signals when time is up Large 6-12 (16.5cm) dial 7-34 (19.6cm) housing 120 volt Gralab model no 255

'Gralab'' Precision Electric Timer - 60 Minute Range - Model 171 by Franklin Machine Products FMP -

$183.40

Gralab Precision Electric Timer 60 min range 1 min minimum setting Two 115 volt accessory outlets, one with a switch to turn off or on atzero, the other for off only at zero Can be used as a count down or a count up timer Continuous buzzer with vol

'Gralab'' Precision Electric Timer - 60 Minute Range - Model 254 by Franklin Machine Products FMP -

$148.46

Gralab Precision Electric Timer 60 min minimum range 1 min minimum setting Continuous buzzer signals when time is up Large 6-12 (16.5cm) dial 7-34 (19.6cm) housing 120 volt Gralab model no 254

'Gralab'' Precision Electric Timer - 15 Hour Range - Model 173 by Franklin Machine Products FMP - 1

$187.76

Gralab Precision Electric Timer 15 hr range 15 min minimum setting Two 115 volt accessory outlets, one with a switch to turn off or on at zero, the other for off only at zero Can be used as a count down or a count up timer Continuous buzzer with vo