See also the Meiro shutters mounted on some Tougodo folding cameras.
The Meiro B (メイローB) is a Japanese camera of the early 1940s, about which almost nothing is known. The Roman spelling "Meiro" is only conjectural, and even the exact picture format is unclear. The camera is only known from the Japanese official list of set prices dated November 1941; in this document, it is listed among cameras taking 4×5cm or 4×6.5cm pictures on 127 film, and it is attributed to Nagata Sōzaburō, a company which is otherwise unknown.
- "Kamera no kōtei kakaku kanpō happyō", November 1941, type 2, section 6B.
- "Kamera no kōtei kakaku kanpō happyō" (カメラの公定価格官報発表, Official announcement of the set prices of the cameras), November 1941. Extract of a table listing Japanese camera production and setting the retail prices, reproduced in "Bebī Semi Fāsuto 'Kore ha bebī wo nanotta semi-ki da'" (ベビーセミファースト"これはベビーを名乗ったセミ機だ", Baby Semi First, 'this is a Semi camera called Baby'), an article by Furukawa Yasuo (古川保男) in Camera Collectors' News no. 277 (July 2000). Nishinomiya: Camera Collectors News-sha. P. 27. Type 2, section 6B.