Lot (4) Carl Zeiss (?) 444020 pinhole apeture for 30 mm barrel microscope

Description

Only Two lots of FOUR  available!
Pinhole apertures are a microscope accessory that can greatly
enhance illumination and imaging. Offered here are pinholes
intended for 30 mm barrel microscopes. While the part number
is clearly 44 40 20, we can't absolutely guarantee that these
are in fact Carl Zeiss. Normal dealer price is each.
Received by us from a community college auction. Most remain
in original poly packaging. Outer packaging may include very
minor cosmetics.
The pinhole measures approximately .040 inches or 1 mm.
We presume this is the normal and standard size.
You can click here for a
pinhole apeture tutorial
Your
unit
bid is for
one
lot of
four
30 mm diameter pinhole apetures as described above.
No foreign bidders. US-only buyer to pay USPS shipping charges
of .85. Please contact us for the lowest possible combined shipping quote.
No shipping charges on local pickup. Add sales tax.
US only bidders/buyers/shipments.
Located at 85552.
For more info visit our
tinaja
website.
Contact us if you need more info.
dh c-7  pinapp30.j baggieofpoly  551