Epoxy-Coated Steel Wire Test Tube Rack, 24-Hole, 15-16mm Hypotenuse_35mm Cut-out at one edge slips

Cut-out at one edge slips this 125 x 70 x 200mm matte-white metal screen over a meter rule for vertical or horizontal positioning during optical-bench image-formation work

specimen transfer

Ratchet-stopped nickel-plated brass 25 mm micrometer screw gauge reading to 0

8mm thickness produces reduced virtual images with a notably widened apparent field

this metal wave apparatus pairs the rotary handle with a degree scale so students can read phase against vertical displacement

Epoxy-Coated Steel Wire Test Tube Rack, 24-Hole, 15-16mm Hypotenuse_35mm Cut-out at one edge slipsCoated with chemical resistant epoxy and rated to 121 C, this steel wire test tube rack holds 24 tubes of 15 16 mm diameter in a four by six grid for drying and storage.