Overhead Projector Pack Size_5 the 90-45-45-degree geometry serving as

the 90-45-45-degree geometry serving as a precision turning element for total internal reflection and beam-redirection optics

Clear magnifier lid on this round viewer captures and enlarges small insects or specimens for elementary and middle school entomology observation

Ten-pack of cast-iron replacement rods at 70mm long and 6mm diameter

Sliding lamp housing makes the beam position adjustable

sized as a load that visibly spins when current flows in the circuit

Overhead Projector Pack Size_5 the 90-45-45-degree geometry serving asABS body, 90mm 3 element uni focal lens. Platform size 285x285mm o ABS body. Projector arm foldable and rotating projection head 360???. Excellent Contrast through 90 mm 3 element lens uni focal giving optimum brightness. o Rust and shock proof. Projector e*uipped with two halogen lamps with *uick changer lamp which can be operated from outside. o Platform size 285 x 285 mm with anti*ue layer Fresnel lens. Halogen lamp 2 x 24 V 250W and economy switch