Stanley No 20 Try Square Type Study

Stanley No. 20 Try Square Type Study

Stanley No. 20 Try Square Type I 3 inch with hand stamped numbers

Manufactured: 1888 to 1984
Patents: Traut's 12/29/1896 ("Hand-y" feature for squares), Traut's 3/16/1897 ( "Hand-y" feature and "quatrefoil" construction )
Sizes: 3,4 1/2, 6, 7 1/2, 9, 10, 12, 15, 18 inch
Construction: Rosewood frame, steel blade, brass trim
Finish: Lacquered
Notes: Originally No. 2, designed No. 20 in 1888. Offered with metric graduation in 1902. The larger sizes of this model have a "quatrefoil" decoration to anchor the four rivets. The 15 and 18 inch sizes have a rest on the handle.

Stanley No. 20 Try Square Type Study

Type	Period	Trademark	Notes	Picture of Mark
1	1888 to 1895	hand stamped numbers	Same as Stanley #2 Plated Try Square Type 3
2a	1896 to 1906	O trademark stamp	"Stanley" in Block Letters with 12-29-96 Patent date
2b	1896 to 1906	O trademark stamp	"Stanley" in Block Letters with 12-29-96 Patent date in small font
3	1907 to 1909	T trademark stamp	"Stanley Rule & Level Co. New Britain Conn. U.S.A." in the form of a T
4	1910 to 1920	V trademark stamp	"Stanley New Britain Conn. U.S.A." in the form of a V	<image not available>
5a	1920	X trademark stamp	Notched rectangle containing "Stanley" with Sweetheart mark intersecting on bottom of rectangle. "New Britain, Conn, U.S.A." below SW mark.
5b	1921 & 1922	Y trademark stamp	Notched rectangle containing "Stanley" with Sweetheart mark intersecting on bottom of rectangle. "Made in U.S.A." below SW mark.	<image not available>
5c	1923 to 1935	AA trademark stamp	Notched rectangle containing "Stanley" with Sweetheart mark intersecting on bottom of rectangle. "Made in U.S.A." below SW mark.	<image not available>
6	1936 to 1984	BB trademark stamp	Notched rectangle containing "Stanley" "Made in U.S.A." below trademark.