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Figure 4: Auger-hole pollen trap

Figure 4: Auger-hole pollen trap

FIGURE 4: Auger-hole pollen trap:
(1) Trap sides – Wood, 3-1/4 by 7 by 3/4 inch, two required.
(2) Trap front – Fir plywood, 8 by 4-5/8 by 3/8 inch, exterior grade.
(3) Trap back – Fir plywood, 8 by 7 by 3/8 inch, exterior grade.
(4) Trap cover – Fir plywood, 8 by 4-1/2 by 3/8 inch, exterior grade.
(5) Grid – Hardware cloth, 5-mesh, 6-3/8 by 3-1/2 inches, formed as shown.
(6) Pollen collecting container cover – Hardware cloth, 7- or 8-mesh, 6-3/8 by 4-1/2 inches, formed as shown.
(7) Pollen collecting container bottom – Copper screen, 4 by 6-3/8 inches. A galvanized steel sheet strip is soldered to one edge as shown to provide stiffness and ease of removal.
(8) Grid supports – Wood, 1-1/2 by 3/4 by 1/4 inch, four required.
(9) Pollen collecting container cover and bottom supports, Wood, 6-1/2 by 3/4 by 1/4 inch, two required, and 3-1/4 by 3/4 by 1/4 inch, two required.
(10) Entrance and mounting tube – 1-1/8-inch diameter copper tubing 3/4-inch long soldered to galvanized steel sheet 2 by 2 inches and nailed over 1-inch auger hole in trap’s back.