Data for investigation (a/the Turn and Bank Indicator)

Data (Turn and Bank Indicator)

Type 98 Turn and Bank Indicator(ARMY)


		left and middle: Tokyo production, right: Tanaka production
Production company/Type		Tokyo TypeⅠ	Tokyo TypeⅡ	Company name Unkown	Tanaka Type
Dial plate	Arrow	Long (white coating)	Long (uncoating)	Long (white coating)	Short (white coating)
	Guideline	The head (long)	The same left	The same left	The head (short)
	Glass pipe	Central 4 pieces at night a/the line paint	The same left	The same left	No
	Steel ball	Black/silver color	The same left	The same left	Black
	Screw	Four pieces	The same left	The same left	Eight pieces
	Dial plate	letter (small)	The same left	The same left	The same point
After pipe department screw		Black	The same left	The same left	Silver color
Air stream entrance department	Slit	small	The same left	The same left	Large
Air stream entrance department	Filter	small	small	Large: disk style	small
Use airplane type (Photograph by particular)		Type 4 heavy bombers	Type 100 Scout planeⅡ	It is not possible be special	Type 2Twin-engined Fighters
		Type 99 Twin Engine Light Bomber Model 2 "OTU"	Type 5 Fighters		Type 3 Fighter
		Type 1 Fighters
		Type 4 Fighters
		Ki-102 "OTU"
Conjecture		Mitubishi/Nakashima/Kawasaki	Mitubishi/Kawasaki		Kawasaki
Although it is conjecture the company which delivers an Indicator every an airplane production company, probably was being decided?

※ company name indistinct Indicator is judged as Tokyo aviation Indicator stock production from a/the characteristic. Moreover, filter department the disk style talking about
※ Besides I do not see the example. This Indicator is judged as the early period style.

Turn and Bank Indicator Model 2 (NAVY)


		left : Tanaka production, right : Tokyo production
Production company/Type		Tanaka pTypeⅠ	Tanaka Type Ⅱ	Tokyo TypeⅠ	Tokyo TypeⅡ
Epitaph board	Dial plate	New writing style	plate absence	Old writing style	Old writing style
Epitaph board	Production time	No	plate absence	August, Showa15	April, Showa17
Dial plate	Right and left letter	A less small! the point of than Tokyo		I decide a little larger it than Tanaka and the that point
	Central "T"	Luminous paint	Luminous paint	White paint	White paint
	Glass pipe	Black	The copper color	Black	The copper color
	Central position	There is light at night	There is light at night	At night light no	There is light at night
	Steel ball	Black	Black	Silver color	Black
Air stream entrance department	Slit	Small, smooth	Small, roundness	Small	Small
Others			Finish rough
Note		Tanaka production: Tanaka aviation Indicator Co. Inc.		Tokyo production: Tokyo aviation Indicator Co. Inc.

TanakaⅡ is judged as the Tanaka product from a characteristic, although the plate is absent.