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ONE s e t s c r e w l o c k s BOTH rods A single set screw adjustment and your support frames lock together—fast and easy with unique new Lab-Crest Frame Clamps* N o m a t t e r how t h e clamps are positioned, t h e set screw is easy t o reach.
Five different types fit every conceivable sup port frame pattern or design. T r y them. Catalog 80A150 tells all—including prices Fischer & Porter Company, 1522 County Line Road, Warminster, Pennsylvania.
*Pat. applied for
F
P FISCHER
& PORTER Circle No. 211 on Readers' Service Card
COMPANY
