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It consist of three light alloy grooved wheels of dia. 80, 50 and 25mm., with a central hole to accept rods of dia. 13 mm.

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Physics & Electronic Laboratory Apparatus

Simple form, to demonstrate the object rolling uphill. Consist of a metal wheel of diameter 50 mm. with a axle of diameter 6 mm. which rolls on a pair of tapering aluminum rails 275 mm. long at a distance of 50 mm. with maximum height of 75 mm. and lowest of 30 mm.

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MS-270 PVG WHEEL (CONE) AND INCLINE

This kit enables pupils to investigate the properties of lenses and to construct simple optical instruments. Kit comprises: 2 lamp holders, s.b.c. Each in cast-alloy shade with 2 axial slots. Shade has integral support arm which is clamped at right angles to a vertical rod, height 165 mm., held in a heavy castmetal base. Holder complete with approximately 1.8 m two-core, PVC-covered cable and 12V, 24W axial filament lamp; cable is led through hole in support arm and securely clamped, base is recessed to accommodate lamp so that the shade may be lowered on the base when not in use. One each right-and left-hand cylindrical lamp shieds, in matt black finish. Light-alloy sheet with with solt parallel to axis, overall size 190x60 mm., height x i.d. Two black plastics ‘combs’ 100x80 mm., with 17 equispaced parallel slots, 45x1.5mm., height x width l 2 black plastics 130x80 mm., each with single and triple slits, 45x1.5 mm., height x width ; 2 ‘comb’ and plate holders; 2spring-loadedclips mounted on matt black finish, metal support bracket; 4 black finish, metal light barriers height 80 mm.; 4 each plano-convex cylindrical lenses, 50x50 mm., side x height, +7D ; 2 each cylindrical lenses, 50x50 mm., side x height, respectively ; plano-convex +10D, +17D, plano-convex--- 17D

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MS-271 PVG RAY OPTICS KIT

Consist of a strongly constructed light box in thick metal sheet finished in black matt paint, with vertical grooves at the ends, sides to accommodate slit plates and color filters; adjustable side doors with plane mirrors; with 12 V 24 W S.B.C. axial filament lamp held in a bakelite moulded lamp holder fitted with 1 meter lead terminating in two 4 mm. plug. Dimensions 180 x 95 x 60 mm. Optical set includes an acrylic rectangular block; triangular prisms, 0 0 equilateral, right angled (45 ), right angled (60 ); semicircular block; cylindrical biconvex lenses of 15 and 30 mm. thickness; biconcave lens ; a mounted plane mirror; cylindrical mirror; parabolic mirror; set of 8 mounted color filters; primary blue, green and red, cyan, magenta orange, violet and yellow; set of 6 colored cards and 2 slit plates.

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MS-272 PVG LIGHT BOX AND OPTICAL SET

Placeholder

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MS-273 PVG PIN HOLE CAMERA KIT

Silvered back with coating for protection. Cat. No. Size mm. 274.01 50X50 274.02 100X25 274.03 100X50 274.04 100X75

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MS-274 PVG PLANE MIRROR STRIPS

Placeholder

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MS-275 PVG MIRROR HOLDERS

CONCAVE MIRRORS

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MS-276 PVG CONCAVE MIRRORS

CONVEX MIRRORS

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MS-277 PVG CONVEX MIRRORS

Semicircular, back silvered, with protective coating. Cat. NO. Height X Diameter mm. 280.01 150X75

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MS-278 PVG CYLINDRICAL CONCAVE MIRROR, GLASS

Placeholder

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MS-279 PVG CYLINDRICAL CONCAVE MIRROR, S.S .

MS-28 PVG AXLE

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