Set of three models on one board, Kidney section, 3 times full size. Nephrons and blood vessels 120 times full size showing a section through renal cortex and medulla. Malpighian corpuscle of kidney,700 times enlarged showing an opened Malpighian corpuscle with glamerules and Bowman's capsule. On base , with key card.

3-Dimensional model of leaf showing detailed structure of transverse section and longitudinal section. A large size model on stand, with key card.

Showing the complete rhizogonus and sporogonus cycle in plasmodium vivax. A set of 24 models, mounted on board, with key card.

A longitudinal section showing detailed structure of the body wall, nematocysts, hypostome, mouth, tentacles and gastro vascular cavity. Also showing the testes, ovary and a portion of tentacle in T.S. An accurate and three dimensional model mounted on stand, with key card. Overall dimensions 370 x 235 x 580 mm.approx.

(Ribonucleic acid) Model showing R.N.A. molecule, D.N.A. Template molecule of chromosome, role of messenger and transfer R.N.A. colour key and structural formula. The complete model arranged on board, fully labelled. Overall dimensions 610 x 455 x 65 mm.approx.

Showing details of internal structure of a typical monocot leaf, mounted on board, with key card. Overall dimensions 420 x 250 x 60 mm.approx.

Showing various tissues, vascular bundles in transverse section of a monocot stem of maize,on board,with key card

Exhibits the various tissues and the scattered closed and collateral vascular bundles in transverse and longitudinal sections in maize.The large pitted vessels,spiral and annular vessels show the anatomy of monocot stem.On base with key card

About 1/10th natural size, showing the topography of muscles,in one piece, on base with key card.

AN INVALUABLE AID TO TEACHING & PRESENTATION. Provides a crisp and bright image on the screen in daylight in a room, of any drawing,sketch or writing on a transparent cellophane sheet,or with ready made transparencies. The projector is built around a 250x250 mm aperture Fresnel lens,mounted on a sturdy sheet metal body.The tilting projection head is carried on a square section column and is provided with rack and pinion arrangement for focussing. Two 24 V 250 Watt halogen lamps are provided with a quick change-over lever to enable use of one lamp at a time,thus obviating any interruption should any lamp go out of order. An electronic control enables light intensity to be adjusted and is also interlocked with the on-off switch to protect against any voltage surge on switching on. An efficient blower cooling system keeps the transparency stage cool. The top cover is designed to open only after disconnecting power supply thus ensuring safety against electric shocks. Complete with detachable power cable. Works on 220-240 V A.C 50 Hz.

One side of the model clearly shows the oral groove and their continuation into the gullet and the other side shows the details of the internal structure, mounted on base, with key card.Overall dimensions 410 x 250 x 95 mm. approx.

For demonstrating the absorption of carbon dioxide by green plants in light, with equilvolumetric released of oxygen. Complete with stand.