SKU: 72675830899

Microscope # 447-TBL-10

Sale price$123.75 Regular price$137.50
Save 10%

Pay in installments of $34.38 with ShopPay, AfterPay and Klarna

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Aug 17 - Aug 22

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

Microscope # 447-TBL-10The 447TBL 10 2x 4x Stereo Microscope from National Optical is a dual magnification stereoscopic microscope fit for laboratories, high school and university students. The stereo (two) eyepiece configuration is preferred by most researchers and students because of the superior depth of field and comfort compared to monocular microscopes. This model of the 447 stereo microscope has a paired 20x eyepiece delivering 40x and 80x magnification. Two

The 447TBL-10 2x/4x Stereo Microscope from National Optical is a dual magnification stereoscopic microscope fit for laboratories, high school and university students. The stereo (two) eyepiece configuration is preferred by most researchers and students because of the superior depth of field and comfort compared to monocular microscopes. This model of the 447 stereo microscope has a paired 20x eyepiece delivering 40x and 80x magnification. Two achromatic paired objectives are parcentered and parfocalled to keep the specimen centered and focused when switching between the two magnification settings. The stage can be illuminated from above and/or below using 10W tungsten lights activated by separate base-mounted On/Off switches. The top (incidental) light source has an adjustable beam to help optimize the brightness and contrast of the specimen.

A user-friendly design complements the range of features that make the 447 stereo microscope a welcome addition to labs as well as classrooms. The heavy-duty post-mounted adjustable viewing head permits use of specimen heights up to 35mm / 1.4", and is also capable of 360° rotation to help share the eyepiece among colleagues and students without moving the microscope. The rack and pinion system has a single focus dial and includes a slip clutch mechanism to prevent mishandling. An adjustable interpupillary distance, left-side diopter correction, and reticle holder/retainer provide the 447 series with the flexibility needed to create a customized viewing experience.

Optical System
  • Paired 20x inclined eyepiece
  • 2x and 4x achromatic objectives
  • 40x and 80x magnification
  • Parfocalled, parcentered, paired objectives
  • 75mm / 3" working distance, 35mm / 1.4" maximum specimen height
  • Eyepiece with diopter adjustment and reticle holder/retainer
  • 55-75mm / 2.2-3" interpupillary distance
Focusing
  • Rack and pinion focus system
  • Slip clutch prevents over-turning
  • Tension adjustment prevents focus drift
Lighting
  • Incidental (top) 10 watt tungsten illumination with adjustable beam
  • Transmitted (bottom) 10 watt tungsten illumination
  • Dual base-mounted On/Off switches
Construction Details
  • 80mm frosted glass and 80mm reversible black and white stage plates
  • Locked on metal stage clips
  • 360° rotating viewing head
  • Cast metal frame
  • Grey enamel finish
  • 14.6" (37 cm) maximum height
  • 5.5 lb (2.5 kg) weight
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 72675830899

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.3 ★★★★★
Based on 18 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
D
Verified Purchase
DONALD BRYANT
Draper, US
★★★★★ 4
Fun with dog
Color: Green, Size: MINI 1.75" - 12 Pack
Had these for about 3 weeks using them multiple times daily and they seem to hold up, the dog loves the chase!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
C
Verified Purchase
CeleryGreen
Fort Morgan, US
★★★★★ 5
So far, so good!
Pattern Name: 3 Large balls, Pattern Name: 3 Large balls
Boomer an 8 yr old male Chesapeake Bay Retriever, 105#. When Boomer isn’t duck hunting, he is all about THE BALL. He chews them apart like I own stock. DAY 1 : I’m impressed with the Mankoda . It’s still in one piece. Barely any show of wear. Boomer is carrying it around like a prize, definitely having “a ball”. Needless to say he is loving it. The bright colors are easy to see in the yard. We haven’t played outside so I can’t comment on the bounce. I got the three pack and I feel it’s a reasonable price. I ordered the large ball because Boomer is a big boy. The ball its self is foamy soft to the touch but very firm . Has no smell at least that I can detect . It has little indents on the surface, I agree (with the info) that it will help rub against my boys teeth (brushing time reduced!). You can see them in the picture (the indents not the teeth). The divots you see are from Boomer. But no real damage. I’ll keep updating for a while.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2026
O
Verified Purchase
Ohio Treasure Chest
West Palm Beach, US
★★★★★ 5
Quality ball - Heeler approved
Pattern Name: 4 Medium balls
My heeler loves this ball He is a huge baller and this balls holds up. Bounces great. Takes a chewing. It’s also lightweight, which is good, because sometimes my aim is bad. The 2.5” is big enough to not roll under the couch. Awesome. The best part is, he has a stash of replacements ready for when he loses it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 15, 2026
M
Verified Purchase
Marcus Scott
Battle Creek, US
★★★★★ 5
Best dog ball ever!
Pattern Name: 3 Large balls
We have a border collie and an Australian cattle dog. Both are obsessed with balls and love to play catch. They would destroy all tennis ball including ones for dogs within minutes. These have lasted over a year! They have some teeth marks but still work great! I have just bought a second set as they still tend to get lost from time to time.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 23, 2026
A
Verified Purchase
Amazon Customer
Cuba, US
★★★★★ 5
These are worth the money!! BUY THEM!!
Pattern Name: 3 Large balls
These balls are amazing if you have a dog that likes to chew! We have 2 medium sized breeds that are heavy heavy chewers and they get so excited when we dig these out from under the couch or tv stand. Most "chew toys" have to find their way to the garbage within a few days. We've had these a little over 2 weeks now and they are holding up great. There are little teeth marks in them but no chunks ripped out and seem to be holding up great. They are a little squishy so I was worried they would get destroyed but nope. They are a little bigger than a tennis ball so I don't have to worry about them choking on them. JUST BUY THEM!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 6, 2026

recommand products