Question 1

upon reading the certificate, i was just wondering what is the National Department of "Standays"? and what exactly is a "ladotory"?

Accepted Answer

Hey thanks for these great questions while I’m not affiliated with this company I did buy this a few years ago and feel qualified to respond.
The National Department of Standays is an international compliance organization that helps determine when people should stand or sit.  Ever wonder why we stand at the National Anthem and sit on a bus, yep that’s the NDS.  Ladotories are quite common internationally and are laboratories where only dudes can work (lads).  While these facilities have produced some of the great 21st century inventions (Whoopie cushions, fart spray, gak) they are increasingly being called into question due to gender inequality and overall zaney antics.

Question 2

I will need the 24” x 18”x 3” for my machine shop, I will use it for scraping surface. So it is really flat ?

Accepted Answer

It's flatter than a concrete paver, but not as flat as a quality name brand (Starrett / Mitutoyo / StandRidge) granite surface plate. I would bet money these Chinese sourced granite plates are no where near meeting  actual "Grade A" specifications for flatness in the USA. (JMHO) I would not trust one to be my only master reference for scraping machine surfaces / ways / dovetails. I only use my HHIP plate for lapping small parts. I do all my metrology work on a Starrett Crystal Pink granite plate.

Question 3

Are the sides of the surface plate square to the top?

Accepted Answer

They are not made to a specific tolerance on the sides.  We  offer Precision Granite squares that have a squareness of +or - of 0.0001". Please see HHIP # 4901-2705 and HHIP# 4901-2706

Question 4

Is this nist traceable?

Accepted Answer

No. It's a product of China.

ASIN	B08BXMRRKC
Batteries Required?	No
Best Sellers Rank	40,527 in Business, Industry & Science ( See Top 100 in Business, Industry & Science ) 4,355 in Test & Measurement
Customer Reviews	4.6 4.6 out of 5 stars (580)
Date First Available	1 Jan. 2024
Included components	Surface Plate
Item Package Quantity	1
Item Weight	454 g
Item model number	4401-1596
Manufacturer	HHIP
Material	Granite
Measurement Accuracy	+/-0001"
Part number	4401-1596
Product Dimensions	17.78 x 7.62 x 17.78 cm; 453.59 g
Size	6 X 6 X 2" Size
Style	Grade: B

4401-1596 6" X 6" X 2" Granite Surface Plate, Grade B, 0 Ledge

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