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"D" Heavy-Duty Batteries - 6 Pack
"D" Heavy-Duty Batteries - 6 Pack
BT035P

6 Pack of Heavy-Duty "D" batteries.

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$5.85 Pack
AA Heavy-Duty Batteries - 8 Pack
AA Heavy-Duty Batteries - 8 Pack
BT031P

Pack of 8 AA heavy-duty batteries

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$5.20 Pack
3.8V Lamp Socket Bulbs - Pack of 10
3.8V Lamp Socket Bulbs - Pack of 10
14718

Standard flashlight sized bulb with threaded base.
Standard flashlight sized bulb with threaded base.

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$3.95 Set
Lamp Socket
Lamp Socket
14715

Plastic base, with brass screw type receptacle and two terminals.
Plastic base, with brass screw type receptacle and two terminals.

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$0.99 Each
Galvanometer, -500-0-500uA
Galvanometer, -500-0-500uA
14041

Sloping front meters for easy reading. +/- 2.5% accuracy with overload protector and color-coded bar. 4"W x 5.5"D x 3.5" H. External zero adjustment.
Sloping front meters for easy reading. +/- 2.5% accuracy with overload protector and color-coded bar. 4"W x 5.5"D x 3.5" H. External zero adjustment.

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$8.95 Each
DC Voltmeter, 0-5V, 0-15V
DC Voltmeter, 0-5V, 0-15V
14039

Sloping front meters for easy reading. +/- 2.5% accuracy with overload protector and color-coded bar. 4"W x 5.5"D x 3.5" H. External zero adjustment.
Sloping front meters for easy reading. +/- 2.5% accuracy with overload protector and color-coded bar. 4"W x 5.5"D x 3.5" H. External zero adjustment.

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$8.95 Each
DC Ammeter, 0-1A
DC Ammeter, 0-1A
14036

Sloping front meters for easy reading. +/- 2.5% accuracy with overload protector and color-coded bar. 4"W x 5.5"D x 3.5" H. External zero adjustment.
Sloping front meters for easy reading. +/- 2.5% accuracy with overload protector and color-coded bar. 4"W x 5.5"D x 3.5" H. External zero adjustment.

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$7.95 Each
Double Pole Double Throw Knife Switch
Double Pole Double Throw Knife Switch
13223

Knife Switch with Screw Type Binding Posts - Double Pole, Double Throw. Great for classroom and laboratory experiments, the knife switch has a mounted screw type binding post for a solid electrical connection.
Knife Switch with Screw Type Binding Posts - Double Pole, Double Throw. Great for classroom and laboratory experiments, the knife switch has a mounted screw type binding post for a solid electrical connection.

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$3.49 Each
C Alkaline Batteries - 6 PackC Alkaline Batteries - 6 Pack
C Alkaline Batteries - 6 Pack
BT034P

• One 6-pack of C alkaline batteries
• Long-lasting mercury-free alkaline formula with a 10 year freshness guarantee
• Made in the U.S.A.
• Rayovac ultra pro is the number 1 selling industrial battery

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$6.45 Pack
C Heavy Duty Batteries - 6 Pack
C Heavy Duty Batteries - 6 Pack
BT033P

6 Pack of Heavy-Duty "C" batteries.

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$5.40 Pack
Conductivity Meter Tester
Conductivity Meter Tester
16893

A very simple and easy unit to compare conductivity of different solutions, acids or salts. Dip the probes, press the button and note. The conductivity can be compared in 6 levels. Red LED gives a quick visual comparison. Stainless Steel probes 0.08" (2mm) dia. x 3.25" (80mm) L. Total length with probes 7" (180mm). Body 3.5" (90mm) L x 2.25" (60mm) x 1" (25mm) Thick. Requires 2 AA batteries, not included.
A very simple and easy unit to compare conductivity of different solutions, acids or salts. Dip the probes, press the button and note. The conductivity can be compared in 6 levels. Red LED gives a quick visual comparison. Stainless Steel probes 0.08" (2mm) dia. x 3.25" (80mm) L. Total length with probes 7" (180mm). Body 3.5" (90mm) L x 2.25" (60mm) x 1" (25mm) Thick. Requires 2 AA batteries, not included.

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$19.25 Each
8 Models Available
Battery Holder With WiresBattery Holder With Wires
Battery Holder With Wires
16885

Battery holders with 12" Lead wires, stripped ends. Sturdy plastic construction.
D, C, AA, and 9V models available with 12" Lead wires with stripped ends. Sturdy plastic construction. batteries not included

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From $1.20 Each
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Conductivity Tester
Conductivity Tester
15441

For showing the electrical properties of liquids. Consists of a molded socket on a PVC cover, provided with binding posts for connection of two wire cords. Two electrodes are internally connected to the lamp circuit. The cover is designed to fit a clear glass tumbler. Light bulb, glass tumbler, and instructions sheets are provided.
For showing the electrical properties of liquids. Consists of a molded socket on a PVC cover, provided with binding posts for connection of two wire cords. Two electrodes are internally connected to the lamp circuit. The cover is designed to fit a clear glass tumbler. Light bulb, glass tumbler, and instructions sheets are provided.

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$9.25 Set
Insulated Copper Wire - Red
Insulated Copper Wire - Red
14722

22 Gauge insulated copper wire. 100 ft. Color: Red
22 Gauge insulated copper wire. 100 ft. Color: Red

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$7.95 Roll
Single Pole Single throw Knife Switch
Single Pole Single throw Knife Switch
13222

Knife Switch with Screw Type Binding Posts - Single Pole, Single Throw. Great for classroom and laboratory experiments, the knife switch has a mounted screw type binding post for a solid electrical connection.
Knife Switch with Screw Type Binding Posts - Single Pole, Single Throw. Great for classroom and laboratory experiments, the knife switch has a mounted screw type binding post for a solid electrical connection.

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$2.29 Each
Energy Ball
Energy Ball
12605

By touching two metal strips simultaneously your body becomes a path for charged molecules to complete a circuit. Result: the ball glows brightly. Works with several people creating the path. When opened, the energy ball reveals a working circuit for insight into the world of computers.

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$5.95 Each
Pair of 12" Alligator LeadsPair of 12" Alligator Leads
Pair of 12" Alligator Leads
11748

Extra flexible, rubber covered wire with insulated Alligator Clips on both ends. Includes 1 red and 1 black wire.
Extra flexible, 12 inch rubber covered wire with insulated Alligator Clips on both ends. Includes 1 red and 1 black wire.

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$2.95 Pair
9V Alkaline Batteries - 6 Pack
9V Alkaline Batteries - 6 Pack
BT037P

6 Pack of Alkaline 9 volt batteries.

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$14.40 Pack
D Alkaline Batteries - 6 Pack
D Alkaline Batteries - 6 Pack
BT036P

6 Pack of Alkaline "D" batteries.

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$8.85 Pack
AA Alkaline Batteries (8 Pack)
AA Alkaline Batteries (8 Pack)
BT032P

Pack of 8 AA Alkaline batteries.

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$5.80 Pack
AAA Alkaline Batteries - 8 Pack
AAA Alkaline Batteries - 8 Pack
BT030P

Pack of 8 AAA Alkaline batteries.

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$6.25 Pack
9V Alkaline Battery
9V Alkaline Battery
BT020P

9V Alkaline Battery
9V Alkaline Battery

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$3.95 Each
Tangent Galvanometer
Tangent Galvanometer
16884

This apparatus is used to demonstrate and teach the basic principle of an electric meter. Apparatus consists of a 3.75" (90mm) dia. air coil wound on an acrylic tube with an acrylic plate in the center to hold a compass. The coil has multiple tappings of 50, 100 and 200 turns, and also has a built-in potentiometer for varying the current, these features allow multiple readings. Operates on one "AA" battery (not included). Includes one compass. Base 7.34" (195mm) x 4.75" (120mm) x 0.5" (12mm). Total height 4.25" (110mm).

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$69.00 Each
Resistance Board
Resistance Board
16883

10 kinds of Resistances mounted on a box type plastic base. Ideal for introduction of resistance in a circuit. 5, 10, 15, 200, 470, 1K, 2K, 10K, 50K and 100k resistances. Connection by 4mm sockets. 8"(200mm) x 5"(125mm) x 1"(25mm).
10 kinds of Resistances mounted on a box type plastic base. Ideal for introduction of resistance in a circuit. 5, 10, 15, 200, 470, 1K, 2K, 10K, 50K and 100k resistances. Connection by 4mm sockets. 8"(200mm) x 5"(125mm) x 1"(25mm).

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$22.95 Each