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U SHAPE MAGNET, ALNICO
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U Shape Magnet, Alnico

(HL-1196)
Made of cobalt steel, 12x6mm, half red and half blue (for N and S) spray painted, very strong, with keeper.
 
  Size in mm
A 50
B 75
C 100

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MAGNETIC NEEDLE WITH STAND
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Magnetic Needle With Stand

(HL-1206)
For magnetic needle, with plastic base 72mm dia and 6mm dia aluminium pillar supporting a steel needle pivot. Overall height of stand 100mm approx.

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CYLINDRICAL MAGNET, ALNICO
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Cylindrical Magnet, Alnico

(HL-1235)
Made of cobalt steel, 12mm dia, in pairs, half red and half blue (for N and S) spray painted, very strong, with keeper.
 
  Size in mm
A 50
B 75
C 100
D 150

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BAR MAGNETS, ALNICO
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Bar Magnets, Alnico

(HL-1288)
Made of cobalt steel, in pairs, half red and half blue (for N and S) spray painted, very strong, with keeper.
 
  Length
A 50MM
B 75MM
C 100MM
D 150MM

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HORSE SHOE MAGNET
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Horse Shoe Magnet

(HL-1226)

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SUSPENSION MAGNET
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Suspension Magnet

(HL-1199)
For demonstrating the principle of the magnetic compass etc. Comprises a cylindrical chrome steel bar magnet, 32 x 6mm length x diameter, with centrical hole for accommodating a suspension thread.

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CYLINDRICAL MAGNETS
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Cylindrical Magnets

(HL-1215)
Made of steel, 12mm dia in pairs, half red and half blue (for N and S) spray painted, with keepers.
 
  Size in mm
A 50
B 75
C 100

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KUNDTS TUBE APPARATUS
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Kundts Tube Apparatus

(HL-1208)
Consisting of a glass tube heavy walled 1350x32mm length x I.D. with cork bung, short and long Ebonite rod, cork pistons, mounted on a polished wooden board 1520x125x22mm L x W x D with spring clamps. The long Ebonite Piston supported by wood clamp secured with wing nuts.

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HAMMER TUNING FORK
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Hammer Tuning Fork

(HL-1213)
Made of wood with rubber head.

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BEATS APPARATUS
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Beats Apparatus

(HL-1250)
Pair of tuning forks. A (426.6) mounted on individual resonance boxes. One fork fitted with sliding mass. With hammer.

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SET OF FOUR FORKS ON BOX
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Set Of Four Forks On Box

(HL-1195)
For demonstrating the formation of a basic major chord. Comprises four forks mounted on a common box and having frequencies of C 256Hz, E 320Hz, G 384Hz and C 512Hz. When sounding together, therefore, the forks produce the chord of C major.
 
Dimensions of Resonance Box : 285x115x63mm LxWxH

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TUNING FORK ON RESONANCE BOX
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Tuning Fork On Resonance Box

(HL-1223)
Set of three tuning forks, two C 256 and one C 512 mounted on resonance boxes with brass plates drilled and threaded to take the threaded shanks of the forks. The length of each box is carefully adjusted to suit the frequency of the fork and is mounted on cork feet.
 
Tuning Fork : C 256
Resonance Box Dimensions : 340x112x47mm L x W x H.
Tuning Fork : C 512
Resonance Box Dimensions :125x112x47mm L x W x H.

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Tuning Fork Set WELCH TYPE
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Tuning Fork Set Welch Type

(HL-1201)
Set of 8 tuning fork of nickel plated steel with plain or screwed shank in case, frequencies marked from (C1 256) to (C2 512) as above.

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MARINERS COMPASS
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Mariners Compass

(HL-1200)
With aluminium bowl gimbals and mounted in wood box, side 125mm, with sliding lid. Diameter of card 75mm.

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BAR MAGNETS
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Bar Magnets

(HL-1203)
Made of steel, 12x5mm, in pairs, half red and half blue (for N and S) spray painted, with keepers
 
  Size in mm
A 50
B 75
C 100
D 150

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